In the late 90s the USAF retired its aging fleet of EF-111A's leaving the Air Force without a dedicated EA platform.

Currently, The 390th provides logistical expertise and personnel to operate the EA-18G Growler in support of the Joint Airborne Electronic Attack Program.

390 ECS's mission is to man and deploy the Expeditionary EA-18G Growler squadrons in accordance with the Joint Airborne Electronic Attack program.

The 390th again saw combat when it jammed radar sites during the invasion of Panama in December 1989, and the Gulf War from, 17 January 1991 – 6 March 1991.

[1] The squadron was located at Naval Air Station Whidbey Island, Washington and flew EA-6B Prowlers alongside VAQ-129.