Ghost sniper First Touchstone hardcover edition.

"Bob Pope, the director of an American secret intelligence anti-terrorist program, loses contact with his most trusted operative, Navy Master Chief Gil Shannon, fearing him dead when a mission to take out a Swiss banker who is channeling funds to Muslim extremists goes awry. But when an American politician and her convoy are assassinated in Mexico City by the Ghost Sniper--an American ex-military gunman for hire employed by Mexico's most ruthless drug cartel-- Pope must turn to retired Navy SEAL Daniel Crosswhite and the newest Sniper Elite hero, ex-Green Beret Chance Vaught, to track down the assassin and expose the corrupt officials behind the murderous plot."