The cancellation of the Airborne Self-Protection Jammer Program create
d a potential shortfall in the protection of the Navy's F/A-18 aircraf
t from radiofrequency threat systems. To address this issue, the Naval
Air Systems Command requested that the Applied Physics Laboratory per
form a cost and operational effectiveness analysis (COEA) of electroni
c warfare suite alternatives for the F/A-18. As a result of this analy
sis, a new program was initiated to procure an improved electronic war
fare suite for F/A-18 aircraft. This article summarizes the methodolog
y used in Phase 1 of the COEA, in which radio-frequency countermeasure
alternatives were examined, and presents unclassified examples to ill
ustrate the nature of the results.