Air Combat Maneuvering
TAC (Tactical) Lead: Member of the flight having the best SA and is directing the sections
maneuvers. However, not always the Mil lead.
Tally: Call meaning A bandit visually sighted.
Track Crossing Angle (TCA): Angular difference in velocity vectors at any instant. (See also Angle
Off for distinction.)
Vector (DEG): Call meaning Alter heading to magnetic heading indicated.
Visual: Call meaning Wingman is in sight.