This SCBA trainer trailer contained simulated confined spaces, inlcuding hallways, stair wells, trap hatches, studded walls, and various doors. The trailer was filled with theatrical smoke, completely diminishing all visibility inside the trailer. Crews encountered a simulated roof collapse with wires blocking their path, and possibly entangling the firefighter. Crews trained on various scenarios including, search and rescue operations, and SCBA competency.  Over 30 personnel obtained training during two sessions.