MIL-STD-2088A, MILITARY STANDARD: BOMB RACK UNIT (BRU), AIRCRAFT (09 MAY 1994)., This standard establishes the general guidelines and criteria for the design and development of a single store bomb rack unit (BRU) for carriage and release of airborne stores (excluding air-to-air missiles) on 14 or 30-inch suspensions from fixed wing and rotary wing aircraft.