Sniper (1993)

Genre: Action | Drama | Thriller
Tagline: One Shot. One Kill. No Exceptions.
Starring: Tom Berenger, Billy Zane, J.T. Walsh, Aden Young, Ken Radley
Plot: Tough guy Thomas Beckett is an US soldier working in the Panamanian jungle. His job is to seek out rebels and remove them using his sniper skills...

Thomas Beckett (Tom Berenger) is an experienced U.S. Marine sniper. After losing several spotters in combat missions, he is paired up with the contrastingly inexperienced, and civilian, Richard Miller (Billy Zane). Their goal: to eliminate a Panamanian drug lord.

Miller is a SWAT team sharpshooter but lacks combat experience and has no confirmed kills to his name. As well as providing the action of the mission, the film focuses on the relationship between the two men and how their differing backgrounds affect their approaches to the job in hand.

http://www.imdb.com/title/tt0108171/
http://en.wikipedia.org/wiki/Sniper_(1993_film)

Followed by: Sniper 2 (2002)