Abstract: A lockable spring-biased latchbolt in some embodiments of a door latch is manipulatable from a first side (protected side) of a door by translation to an opened-door position, and a separate element situated alongside the latchbolt is manipulatable from a second side (less protected side) of the door to contact and move the latchbolt to the opened-door position only if movement of that second element is not prevented by a locked position of a locking means. The locking means in these embodiments does not interfere with opening the door from the first side. The locking means can be changed back and forth between its locked position and its unlocked position by use of a key (or combination or code) from the second side of the door, and optionally from the first side of the door with or without the key (or combination or code).

Abstract: Networks of cameras and/or other sensors enable a sensor monitoring system or other computer system to control hiding devices used to enable the cameras and/or other sensors to evade danger by hiding or being disguised. Detection and/or determination of potential danger is garnered from data, from some of the cameras and/or sensors, that they or other of the cameras and/or sensors may be facing eminent danger of discovery, manipulation, alteration, deactivation, and/or damage. The hiding devices are caused to hide or disguise the sensors and/or cameras that appear to be in danger. Hiding or disguising can continue for at least a finite duration of time, or until indication of danger is gone. Some of the cameras and/or other sensors, and their associated hiding devices, can be turned off or made to sleep for periods of time until at least awaken by time-out events or by events indicating a need to do so.

Abstract: A blast and projectile resistant gun port is provided with both a roller-slide mechanism and a lever-actuated, spring-loaded, cam mechanism which a shooter operates to open or close a gun-port door over a gun-port opening in a gun-port frame, as well as to translate the gun-port door out of the way of the gun-port opening. The shooter is able to effect these actions by nudging the lever on the cam mechanism with or without placing one or more hands on the lever and is thus able to keep both hands on weaponry. The gun-port door keys into its closed position, and an elastic weather seal is squeezed firmly between the gun-port door and the gun port frame when the gun-port door is closed. The squeezing of the weather seal is effected by springs in the cam mechanism. The gun-port door and the components and subassemblies are easily and rapidly replaceable.

Abstract: Security systems may include sensing, networked communications, stealth, alarms, and countermeasures, any or all of which may adapt to threats. These systems may also include armor and barriers of concrete and/or steel. They can adapt to severity of threats, weather, and/or other situational aspects. They can anticipate at least some threats in order to obtain early warning and react more quickly to those threats. They can adapt by altering their configurations, including alterations in communication networking structures and methods, and changes in data-storage and processing duties at processing nodes. Defensive and/or offensive countermeasures can be employed to deter, confuse, trap, and/or disable terrorists. The systems are capable of self-maintenance, self-healing, and self-restoration as threats subside. The systems can include subsystems capable of autonomous operation.

Abstract: Gun ports fitted to a wall of a building or vehicle each comprise an expandable aperture that accommodates penetration from within by a gun barrel having irregularly shaped attachments. The gun ports can provide protection against laser pointers used in training exercises, where lasers are used outside the gun ports by attackers against those protected behind the gun ports. Each implementation of a gun port can accommodate guns of different sizes and shapes. The gun ports can be configured as exchangeable cartridges or subassemblies that can readily replace regular non-expandable apertures otherwise used for defense against real ballistic weapons and explosives. Each expandable aperture expands and contracts as necessary to fit sizes and shapes of a gun barrel portion inserted through it. Of special importance is accommodation of a laser sensor module attached near the firing end of a gun. A window for sighting the gun is provided.

Abstract: An intrusion delaying barrier includes primary and secondary physical structures and can be instrumented with multiple sensors incorporated into an electronic monitoring and alarm system. Such an instrumented intrusion delaying barrier may be used as a perimeter intrusion defense and assessment system (PIDAS). Problems with not providing effective delay to breaches by intentional intruders and/or terrorists who would otherwise evade detection are solved by attaching the secondary structures to the primary structure, and attaching at least some of the sensors to the secondary structures. By having multiple sensors of various types physically interconnected serves to enable sensors on different parts of the overall structure to respond to common disturbances and thereby provide effective corroboration that a disturbance is not merely a nuisance or false alarm. Use of a machine learning network such as a neural network exploits such corroboration.

Abstract: A mobile elevated building assembly is configured to be compactly transportable in a transportation mode yet readily reconfigured to an installed mode after set-up with a building held many meters off of the ground by a tower supported off of the ground by outriggers. A flat-bed trailer is used to transport the assembly while in its transportation mode, and the trailer can optionally remain attached to the bottom of the tower in the installed mode. A foldable stairway and top-of-stairs platform can form a subassembly that can be pivotally attached where they connect to one-another, and this connection can be supported by a horizontal upper member of the tower. The platform can include one of at least two horizontal support members for holding the building on top of the tower. Methods are provided for reconfiguring the assembly and subassemblies between their transportation mode and their installed mode.

Abstract: A blast and projectile resistant gun port is provided with both a roller-slide mechanism and a lever-actuated, spring-loaded, cam mechanism which a shooter operates to open or close a gun-port door over a gun-port opening in a gun-port frame, as well as to translate the gun-port door out of the way of the gun-port opening. The shooter is able to effect these actions by nudging the lever on the cam mechanism with or without placing one or more hands on the lever and is thus able to keep both hands on weaponry. The gun-port door keys into its closed position, and an elastic weather seal is squeezed firmly between the gun-port door and the gun port frame when the gun-port door is closed. The squeezing of the weather seal is effected by springs in the cam mechanism. The gun-port door and the components and subassemblies are easily and rapidly replaceable.

Abstract: A mobile elevated building assembly is configured to be compactly transportable in a transportation mode yet readily reconfigured to an installed mode after set-up with a building held many meters off of the ground by a tower supported off of the ground by outriggers. A flat-bed trailer is used to transport the assembly while in its transportation mode, and the trailer can optionally remain attached to the bottom of the tower in the installed mode. A foldable stairway and top-of-stairs platform can form a subassembly that can be pivotally attached where they connect to one-another, and this connection can be supported by a horizontal upper member of the tower. The platform can include one of at least two horizontal support members for holding the building on top of the tower. Methods are provided for reconfiguring the assembly and subassemblies between their transportation mode and their installed mode.

Abstract: Security systems may include sensing, networked communications, stealth, alarms, and countermeasures, any or all of which may adapt to threats. These systems may also include armor and barriers of concrete and/or steel. They can adapt to severity of threats, weather, and/or other situational aspects. They can anticipate at least some threats in order to obtain early warning and react more quickly to those threats. They can adapt by altering their configurations, including alterations in communication networking structures and methods, and changes in data-storage and processing duties at processing nodes. Defensive and/or offensive countermeasures can be employed to deter, confuse, trap, and/or disable terrorists. The systems are capable of self-maintenance, self-healing, and self-restoration as threats subside. The systems can include subsystems capable of autonomous operation.

Abstract: Blast-resistant foundations are presented that can be used to support a tower, a building, a building supporting a tower, and a tower supporting a building. These foundations can be transported to an installation site and rapidly deployed. They are comprised of one or more precast foundation blocks that do not penetrate the ground beneath them, do not require adjacent foundation blocks to be bound to one-another at their sides with interconnecting steel, and do not require the buildings and/or towers they support to use guy-wires. They can include protected cavities that contain utility equipment and supplies, and they can include conduits from these cavities that can be extended upward through one or more legs of a tower.

Abstract: Security systems may include sensing, networked communications, stealth, alarms, and countermeasures, any or all of which may adapt to threats. These systems may also include armor and barriers of concrete and/or steel. They can adapt to severity of threats, weather, and/or other situational aspects. They can anticipate at least some threats in order to obtain early warning and react more quickly to those threats. They can adapt by altering their configurations, including alterations in communication networking structures and methods, and changes in data-storage and processing duties at processing nodes. Defensive and/or offensive countermeasures can be employed to deter, confuse, trap, and/or disable terrorists. The systems are capable of self-maintenance, self-healing, and self-restoration as threats subside. The systems can include subsystems capable of autonomous operation.

Abstract: Blast-resistant foundations are presented that can be used to support a tower, a building, a building supporting a tower, and a tower supporting a building. These foundations can be transported to an installation site and rapidly deployed. They are comprised of one or more precast foundation blocks that do not penetrate the ground beneath them, do not require adjacent foundation blocks to be bound to one-another at their sides with interconnecting steel, and do not require the buildings and/or towers they support to use guy-wires. They can include protected cavities that contain utility equipment and supplies, and they can include conduits from these cavities that can be extended upward through one or more legs of a tower.

Abstract: A gun port having a door with spaced-apart plates provides armor against ballistic weapons and explosive blasts. Such a gun port is useful in defense of armored vehicles, armored buildings, and other installations. Sliding or rolling such a gun port door across a gun port opening horizontally on guide rails allows for ease of use by both persons who are left handed or right handed. A door slide sub-assembly is easily mounted or un-mounted from a separate port frame installed in a vehicle or building wall, providing easy repair of the door and door slide sub-assembly, and easier replacement of the port frame.

Abstract: Security systems may include sensing, networked communications, stealth, alarms, and countermeasures, any or all of which may adapt to threats. These systems may also include armor and barriers of concrete and/or steel. They can adapt to severity of threats, weather, and/or other situational aspects. They can anticipate at least some threats in order to obtain early warning and react more quickly to those threats. They can adapt by altering their configurations, including alterations in communication networking structures and methods, and changes in data-storage and processing duties at processing nodes. Defensive and/or offensive countermeasures can be employed to deter, confuse, trap, and/or disable terrorists. The systems are capable of self-maintenance, self-healing, and self-restoration as threats subside. The systems can include subsystems capable of autonomous operation.

Abstract: Blast-resistant foundations are presented that can be used to support a tower, a building, a building supporting a tower, and a tower supporting a building. These foundations can be transported to an installation site and rapidly deployed. They are comprised of one or more precast foundation blocks that do not penetrate the ground beneath them, do not require adjacent foundation blocks to be bound to one-another at their sides with interconnecting steel, and do not require the buildings and/or towers they support to use guy-wires. They can include protected cavities that contain utility equipment and supplies, and they can include conduits from these cavities that can be extended upward through one or more legs of a tower.

Abstract: Barrier elements provide security from terrorist threats by ability to withstand both vehicle collisions and explosive blasts. Each barrier element is prefabricated to include a massive block of durable material, preferably of high strength concrete, with at least one tunnel extending at least partially between respective cavities in two opposite sides of the block. Each barrier element also includes at least one beam that is preferably made of steel and extends through one such tunnel. Multiple blocks are positionable slidably on top of the ground side-against-side with their beams coupled longitudinally to one another at least approximately end-to-end. Retainer means can be used to block coupling means from entry into the tunnels. Forces from a vehicle collision or an explosive blast can cause barrier elements to rotate relative to one-another when the couplings between beams hinge or bend as the durable material that interferes with the rotation breaks away.

Abstract: Barrier elements provide security from terrorist threats by ability to withstand both vehicle collisions and explosive blasts. Each barrier element is prefabricated to include a massive block of durable material, preferably of high strength concrete, with at least one tunnel extending at least partially between respective cavities in two opposite sides of the block. Each barrier element also includes at least one beam that is preferably made of steel and extends through one such tunnel. Multiple blocks are positionable slidably on top of the ground side-against-side with their beams coupled longitudinally to one another at least approximately end-to-end. Retainer means can be used to block coupling means from entry into the tunnels. Forces from a vehicle collision or an explosive blast can cause barrier elements to rotate relative to one-another when the couplings between beams hinge or bend as the durable material that interferes with the rotation breaks away.

Abstract: Barrier elements provide security from terrorist threats by ability to withstand both vehicle collisions and explosive blasts. Each barrier element is prefabricated to include a massive block of durable material, in some embodiments segmented, with at least one tunnel extending at least partially between respective cavities in two opposite sides of the block. Each barrier element also includes at least one beam that is preferably made of steel and extends through one such tunnel. Multiple blocks are positionable slidably on top of the ground side-against-side with their beams coupled longitudinally to one another at least approximately end-to-end. Retainer means can be used to block coupling means from entry into the tunnels. Forces from a vehicle collision or an explosive blast can cause barrier elements to rotate relative to one-another when the couplings between beams hinge or bend as the durable material that interferes with the rotation breaks away.

Abstract: Panels and their modules, such as for walls and roofs, are disclosed that provide armored shelter for protecting people and equipment from ballistic projectiles and mortar attacks. Each module is made from multiple co-parallel plates arranged in a stack, spaced apart, and held together along their sides by side elements. This is done in such a way that, when assembled side-by-side or end-to-end into panels, adjacent modules overlap one another to prevent straight-through seams yet allow any damaged module to be removed and replaced without moving adjacent modules. Space within a module, between plates and sides, can contain energy absorbing material in a variety of shapes. Plates serve as structural flanges, and side elements comprise structural webs, to permit each module to function as a structural beam. With such designs, the modules and panels are easily and quickly inserted and/or removed individually by a sequence of simple manipulations.