Slayer

Slayer (2006) is a action, horror, science fiction directed by Kevin VanHook rated 4.6/10.

An elite commando squad led by longtime soldier buddies Hawk and Grives run afoul of lethal and powerful vampires in a South American rain forest. Grieves gets turned into a vampire and becomes leader of a savage roving herd. Moreover, Hawk has to rescue his scientist ex-wife Dr. Laurie Williams from the bloodsuckers' evil clutches.