Slipstream (1981) is a video by Jethro Tull, recorded during the 1980 A tour. It was originally released on VHS, Capacitance Electronic Disc, and laserdisc, and was released as a (bootleg) DVD in Brazil (as seen in the cover on the right) in 2003. It is also included in the (2004) bonus DVD edition of A. This bonus-disc DVD is the only official release on DVD.
The band is in an air traffic control tower, when they see some impending disaster. The cover of A is taken from this video. RAF Fylingdales (note the 's') is the site of a Ballistic Missile Early Warning System radar situated in the North York Moors National Park, which explains the lyric to the song.