Generate a question that has the following answer: Sgt. Thomas Beck for the following movie plot: In the opening scene, a man named Jack DeVries (Chris Mulkey), robs a Los Angeles Wells Fargo bank, and kills all of the security guards inside. DeVries leads the Los Angeles Police Department on a high-speed chase, during which he forces an innocent motorist and several LAPD patrol cars off the road.In the meanwhile, the hot-tempered LAPD detective Sgt. Thomas Beck (Michael Nouri) questions DeVries' neighbor; the neighbor tells Beck that DeVries was a quiet, decent gentleman. Beck's partner, Det. Cliff Willis (Ed O'Ross) runs up and informs Beck that the LAPD is pursuing DeVries through West Hollywood.DeVries encounters a police blockade overseen by Beck. DeVries is shot several times, smashes through the blockade and crashes. He staggers out of the wreck, tosses out the bank bags full of money and laughs at the amazed police; the police then shoot at the Ferrari which explodes, knocking down DeVries.At a local hospital, a doctor informs Beck and Willis that DeVries is not expected to survive the night; Willis tells DeVries' doctor that within a span of only two weeks, DeVries has been on a violent crime spree.At the police station, Lt. Ed Flynn (Clu Gulager) and Lt. John Masterson (Clarence Felder) discuss reassigning Beck. After Flynn leaves, FBI Special Agent Lloyd Gallagher (Kyle MacLachlan) arrives and informs Masterson and Beck that the latter has been assigned to work with Gallagher. Gallagher states he has been trailing DeVries for the past month all the way from Seattle. When he learns that the spree killer is at the hospital, Gallagher then rushes off to go see DeVries.At the hospital, DeVries suddenly awakes, disconnects his life-support equipment and walks over to the comatose man in the next bed, Jonathan P. Miller (William Boyett). DeVries rips off Miller's breathing mask, then a slug-like alien life-form emerges from DeVries' mouth and transfers itself into Miller's body; DeVries then drops dead. When a doctor and nurse defibrillate Miller, Miller amazes the staff by awakening and calmly...
A:
Who is the main LAPD character?