NEW : Suspect Johnny Wicks had a lengthy rap sheet . SUSPECT JOHNNY WICKS Slain guard identified as former Vegas police officer . Authorities said the deputy marshal 's name would be released after he recovers further . FBI : Wicks pulled shotgun from underneath his jacket and began shooting .
NEW : Suspect Johnny Wicks had a lengthy rap sheet . SUSPECT JOHNNY WICKS Slain guard identified as former Vegas police officer . FBI : Wicks pulled shotgun from underneath his jacket and began shooting .