Teenage Mutant Ninja Turtles #4 [Second Printing]

The Turtles are traversing city rooftops when they are attacked by the Foot Clan. After the battle, they spot the TCRI building and decide to infiltrate. Inside they find Splinter in a glass tube. Fighting off the Utroms in the building, Don, Raph, and Leo are teleported away by an Utrom translocation device.