@Raith
There were 7 survivors and a dog on the chopper
Michael, Pegs, Riley, Datu, Kelly, Tanya, Hope and Lady.
Steven got lumped in with the other minor characters. Who got made lunch while trying to escape, or crushed by the tower falling on them. The exception being Lewis who was presumably still tied up when the tower fell.
I think its more than possible that Saul, Lizzy and Victor all got away. It would appear that Lizzy was left alone in the confusion. They got out the Hummer, and presumably would have headed over to her.
Extra note: That artwork is sweet!