Abstract: Systems and methods directed to a solar electric system for use in freight systems. In some embodiments, a solar power system can be configured to provide power to a refrigerated truck trailer. For example, a solar power system can be composed of a solar panel package that can include solar cell layer(s), conductive material(s), and support portion(s).

Abstract: A penetration resistant material can comprise a plurality of layers of loosely-interconnected, mutually nonbonded and non-laminated sheets of ballistic para-aramid synthetic fabric coupled between inner and outer layers of cloth fabric.

Abstract: A tactical vest can comprise a body garment, a solar collector mounted on the body garment, and a power interface coupled to the solar collector operable to store power collected from the solar collector and distribute power to rechargeable devices that can be connected to the power interface.

Abstract: A power management apparatus is operable to regulate power to an attached powered device according to power requirements of the device. The illustrative power management apparatus can comprise a power input connector, at least one power output connector, and at least one power control circuit. The at least one power output connector is operable to supply power to powered devices characterized by a plurality of power characteristics. The at least one power control circuit is operable to determine a power characteristic of a powered device connected to the at least one power output connector and to supply power to the powered device in compliance with the power characteristic.

Abstract: A water pack enables water purification in the field. An illustrative water pack can comprise first and second bladders configured to respectively hold treated and untreated water and comprising a filter connector configured to receive and hold a filter between the first and second bladders. A gas bladder connector can be coupled to the first bladder in a configuration to receive and hold a gas bladder internal to the first bladder. A regulator coupled to the gas bladder connector can be configured to attach a pump and regulate pressurization of gas driven by the pump in the gas bladder at a predetermined pressure and volume.

Abstract: A water purification apparatus enables water purification in the field. An illustrative water purification apparatus can comprise at least one water purification filter and a solar-powered pump configured to pump source water through the at least one water purification filter, producing purified water.