Airborne Laser - High-energy chemical oxygen iodine laser (COIL) carried aboard a modified Boeing 747-400F freighter. Part of the Department of Defence's approach to defending against ballistic missiles.
Boost-Phase Intercept - Boost Phase Intercept (BPI) is a concept in which a hostile Theatre Ballistic Missile (TBM) is intercepted during its boost phase of flight. From the Federation of American Scientists.