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The Naval Air Material Center's Naval Aircraft Modification Unit (NAMU) at Johnsville, Pennsylvania modified the B-17s to PB-1W specification by sealing up the bomb bay doors and installing 300 gallon drop tanks on each wing, in addition to the "Tokyo Tanks" mounted in the outer wings, holding a total of 3,400 gallons of fuel, giving the PB-1W ...
The doors may also require a mechanical assist device to open and close. [47] A HMMWV equipped with SLAMRAAM surface-to-air missiles, on display at the Paris Air Show in June 2007. Another drawback of the up-armored HMMWVs occurs during an accident or attack, when the heavily armored doors tend to jam shut, trapping the troops inside. [48]
Utilizing a breaching tool is unnecessary if the door is unlocked and easy to open. [5] [3] [6] [1] If the door is locked, breachers can attempt to force inward-opening doors with a strong kick. The breacher will aim to hit the door near the locking mechanism, but not kick the doorknob itself as one can easily twist an ankle doing so. [7]
A United States Government Class 5-B vault door, which has been tested and approved by the Government under Fed. Spec. AA-D-600D, is ballistic resistant and affords the following security protection: 20 man-hours against surreptitious entry. 30 man-minutes against covert entry. 10 man-minutes against forced entry.
It weighs less than 100 lb (45 kg) or 60 lb (27 kg) for the Reconnaissance version. Its cargo bay accommodates a variety of sensor payloads. The robot is controlled through a two-way radio or a Fiber-optic link from a portable or wearable Operator Control Unit (OCU) that provides continuous data and video feedback for precise vehicle positioning.
The SMAW-NE has an enhanced-blast warhead with a 4 lb (1.8 kilograms) charge of PBXN-113 and a slightly modified version of the dual mode fuze used by the HEDM rocket, the Mk 420 Mod 1. [ 15 ] [ 33 ] The Indian Head Naval Surface Warfare Center teamed with Marine Corps Systems Command and Talley Defense Systems to respond to an urgent U.S ...