New expanding net interceptors and rescue devices are provided. In some aspects of the invention, a rescue device comprises a dense, positionable head, an extendable boom and a handle with an expansion and/or inflation trigger, wherein the positionable head comprises folded or compacted net, expandable and/or inflatable by the expansion and/or inflation trigger.

A box by pin perforating gun system using swaged down gun bodies, a removable cartridge to hold a detonator and switch, and an insulated charge holder as an electrical feed-through.

A box by pin perforating gun system using swaged down gun bodies, a removable cartridge to hold a detonator and switch, and an insulated charge holder as an electrical feed-through.

An indirect fire mission training round includes a projectile training shell having an outer periphery, a proximal end, and a distal end, the proximal end defining an interior chamber. The projectile training shell is configured to be inserted within a cavity of a projectile firing instrument. The round includes an interlock member configured to securely receive a proximal portion of a subsequent training round within the interior chamber of the projectile training shell. The round includes a resistance brake extending outward from the outer periphery and configured to contact a wall of the cavity of the firing instrument and provide resistance that secures the projectile training shell at a position within the cavity. The resistance break is selectively disengageable such that the position of the projectile training shell is adjustable.

An indirect fire mission training round includes a projectile training shell having an outer periphery, a proximal end, and a distal end, the proximal end defining an interior chamber. The projectile training shell is configured to be inserted within a cavity of a projectile firing instrument. The round includes an interlock member configured to securely receive a proximal portion of a subsequent training round within the interior chamber of the projectile training shell. The round includes a resistance brake extending outward from the outer periphery and configured to contact a wall of the cavity of the firing instrument and provide resistance that secures the projectile training shell at a position within the cavity. The resistance break is selectively disengageable such that the position of the projectile training shell is adjustable.

New expanding net interceptors and rescue devices are provided. In some aspects of the invention, a rescue device comprises a dense, positionable head, an extendable boom and a handle with an expansion and/or inflation trigger, wherein the positionable head comprises folded or compacted net, expandable and/or inflatable by the expansion and/or inflation trigger.

A stacked, collaborative engagement ammunition round is presented. The round includes plural stacked miniaturized projectiles where such projectiles separate after launch and then swarm as a group towards a target or targets. At launch, the projectiles may fly in a preselected formation, leader-follower towards the target. Or, the projectiles may deploy propellers, tri-copter or quad-copter vanes, and self steer swarming to the target. Each projectile has its own miniaturized guidance, navigation and control components, autopilot, cameras, transmitter, receiver, antennae, power source, sensors, fuzes and/or flex circuits.

A box by pin perforating gun system using swaged down gun bodies, a removable cartridge to hold a detonator and switch, and an insulated charge holder as an electrical feed-through.

A box by pin perforating gun system using swaged down gun bodies, a removable cartridge to hold a detonator and switch, and an insulated charge holder as an electrical feed-through.

Provided is a barrel insert for use with a barrel containing a plurality of axially stacked projectiles. The barrel insert has a proximal and a distal end, the distal end adapted to engage a proximally disposed projectile disposed in the barrel. The barrel insert also defines an expansion volume for propellant gases for launching the proximally disposed projectile at a predetermined velocity.