The 1951 US-Iceland Defence Agreement formalised the presence of American military aircraft in Iceland - the US having had a military presence since 1941. Under this agreement, dedicated units were permanently assigned to the Iceland Defense Force, a unified command subordinate to US European Command. Notable units included the 57th FIS, which provided air defence for Iceland between 1954 and 1995.
After 1995, these permanently stationed front-line units were replaced by regular detachments of aircraft, on a rota basis, from units based in the Continental USA or from USAFE. These units report to the 85th Group USAF during their deployment.
When in Iceland, all aircraft are based at NAS Keflavik.
The main roles currently provided are:
Search and Rescue