pilot's halo
halo
ii. A high-altitude, low-opening (HALO) paradrop system. The paratroopers jump from aircraft at very high altitudes and open their parachutes at very low heights. This technique ensures rapid infiltration and tactical surprise. The latter is achieved as the paratroopers can jump from the aircraft, which is flying some distance away from the drop zone.
iii. The reflection of cockpit instruments seen in a canopy at night.
iv. The colored ring seen on clouds in the direction away from the sun (i.e., with the aircraft's shadow at the center). Also called a pilot's halo.
v. A bright ring around the spot produced by a beam of electrons striking the fluorescent coating in a cathode-ray tube.