Lionsgate and Millennium have another meat and potatoes box office feast on their hands in the wake of Angel Has Fallen overperforming this past weekend to a $21.3M opening with Sylvester Stallone’s Rambo: Last Blood set to open between $21M-$24M on Sept. 20. Longline for Last Blood directed by Adrian Grunberg, and written by Stallone and Matthew Cirulnick is “Rambo must