Agent Steel's second album, Unstoppable Force, is their second studio album.
It was recorded from March to June 1986 at Morrisound Recording Studios in Tampa, Florida, and digitally mastered in July 1986 at Criteria Studios in Miami, Florida.
Combat Records released the album in March 1987.
The Mad Locust Rising EP is included on the Century Media Records release from 1999, although the cover version of the Judas Priest song "The Ripper" is missing on certain subsequent reissues.
It was the band's final album before disbanding in 1988, only to reunite in 1998 for the release of Omega Conspiracy in 1999. .