I think it's a fair bet that ECO means "Electronic Countermeasures Officer". The Raptor is a recon and electronic warfare platform. And today the acronym is ECMO, which is close enough: [1] and [2] for example. --Serenity 06:00, 3 June 2007 (CDT)
- Fair enough. There are variants on the title of the position. Panther 07:32, 3 June 2007 (CDT)