With James free, they scrambled toward the back exit. Mac rigged a pressurized steam pipe to blow, creating a curtain of scalding fog that masked their escape.
Mac didn't move. He grabbed a plastic bottle and began mixing ammonia with iodine. "You never did understand the difference between an order and a choice, Dad." [S3E1] Improvise
"They're already on the ground, but they're pinned down. If you don't come, they don't make it out." With James free, they scrambled toward the back exit