United States For decades the U.S. Air Force used fully-trained navigator officers as EWO trainees, or EWOT. Their primary training was carried out by the
453d Flying Training Squadron at the former
Mather AFB, California near
Sacramento. Their follow-on training as EWOs, called "Combat Crew Training School" (CCTS), was usually carried out at the units to which they had been assigned. The
B-52 Stratofortress CCTS was conducted at
Castle AFB, California in B-52G models. B-52H model differential training was conducted at the gaining Unit location. EWOs could also be assigned to
F-105G Thunderchief Wild Weasels,
F-4 Phantom II,
F-111 Aardvark,
C-130 Hercules versions (MC-130, EC-130, etc.),
B-1 Lancer or a number of versions of the
RC-135. As an example, the EWO in a B-52 is trained in the use of a variety of active and passive
electronic countermeasures (ECM) techniques and equipment. Active jammers include the AN/ALQ-155 Power Management System, AN/ALQ-117,
AN/ALQ-172, AN/ALT-16, AN/ALQ-122,
AN/ALQ-153 Tail Warning System and the low-band communications jammer set AN/ALT-32. The EWO monitors the
electromagnetic environment through the use of radar receivers such as the
AN/ALR-46 and
AN/ALR-20A. Additionally, the EWO has command of AN/ALE-24 chaff and AN/ALE-20 flare set for self-protection. ==Training courses==