Pictured (L-R): Meshach Taylor (Harrison Scott) and Joe Mantegna (David Rossi). The BAU travels to Santa Monica when burned bodies of homeless people begin showing up by the famous pier. Also, Rossi reconnects with his former Marine sergeant from Vietnam. Emmy Award-nominated actor Meshach Taylor (“Designing Women”) guest stars as Rossi’s former Marine sergeant, Harrison Scott. Photo: Screen Grab/CBS © 2012 CBS Broadcasting Inc. All Rights Reserved.