attack targets with a useful payload and then return
    to its base. 
comms   Communications.
concussive   With violent, if not explosive, force.
contrails   Trails of condensed water vapor created in
    the air by an aircraft flying at high altitude.            
corner velocity (corner speed)   The minimum speed at
    which an aircraft can pull its maximum rated g's.     
critical Mach number   The Mach number of the total 
    airframe, as opposed to local Mach numbers which
    could vary across an aircraft from wing to fuselage.
cross-deck pendant   On an aircraft carrier, the portion of
    the arresting cable which stretches across the deck and
    engages the hook.
crosswind   The wind vector component which is
    perpendicular to an aircraft's course.
crosswind crab   Correction of aircraft heading to
    compensate for crosswind drift.
CRT azimuth   The angular measure of direction in the
    horizontal plane displayed with a cathode ray tube
    (CRT) instrument system.