Abstract: A method comprising: accessing a block that is not opaque and defines a plurality of wells that are not in fluid communication with each other; and providing a storage medium storing a set of instructions on how to use the block.

Abstract: First-aid systems having an ultra compact first-aid pouch configured to fit behind the ballistic plates of a protective vest are disclosed. In this configuration, the first-aid kit is protected from shrapnel and tearing, is easily locatable and removable and does not effect the user's freedom of movement. When the first-aid pouch is removed from its protected location, it presents the first-aid equipment in a logical and easily viewable manner.

Abstract: First-aid systems including an ultra compact first-aid pouch configured to fit behind the ballistic plates of a protective vest are disclosed. In this configuration, the first-aid kit is protected from shrapnel and tearing, is easily locatable and removable and does not affect the user's freedom of movement. When the first-aid pouch is removed from its protected location, it presents the first-aid equipment in a logical and easily viewable manner.

Abstract: In a first-aid system including an ultra compact first-aid pouch configured to fit behind the ballistic plates of a protective vest, the first-aid kit is protected from shrapnel and tearing, is easily locatable and removable and does not effect the user's freedom of movement. When the first-aid pouch is removed from its protected location, it presents the first-aid equipment in a logical and easily viewable manner.

Abstract: In a first-aid system including an ultra compact first-aid pouch configured to fit behind the ballistic plates of a protective vest, the first-aid kit is protected from shrapnel and tearing, is easily locatable and removable and does not effect the user's freedom of movement. When the first-aid pouch is removed from its protected location, it presents the first-aid equipment in a logical and easily viewable manner.

Abstract: A first aid systems for an ultra compact first-aid pouch configured to fit behind the ballistic plates of a protective vest are disclosed. In this configuration, the first-aid kit is protected from shrapnel and tearing, is easily locatable and removable and does not effect the user's freedom of movement. When the first-aid pouch is removed from its protected location, it presents the first-aid equipment in a logical and easily viewable manner.

Abstract: Provided is a storage compartment allowing quick deployment of emergency equipment stored therein, where the compartment comprises a first door that is opened and the equipment deployed in response to pulling a pull cord connected to the compartment or an electronic signal. Also provided is a bag comprising emergency equipment within a compartment deployable by a user while wearing the bag, where the bag is configured to deploy the piece of equipment in response to pulling a pull cord connected to the bag or an electronic signal. Additionally, a bag configured to house a gas mask and gas mask equipment is provided, where the bag is configured to deploy the gas mask from the bag in response to an action by a user.

Abstract: Provided is a device for improving the focus of an object viewed using a night vision instrument.

Abstract: Provided is a device for improving the focus of an object viewed using a night vision instrument.