Jack wasn't ready to give the titans any breathing room. While invisible, he jumped from a roof top and tossed several stun grenades at the group of titans. When the stun grenades went off, it would temporarily disorientate their sight, hearing, and reflexes. He also had his pistol out with concussion rounds and open fire on the two summoned animals. He aimed for head shots. The stun grenades were followed by smoke grenades. The smoke began to fill the area as Jack landed near the group. His visor changed to thermal so he could see through the smoke. He tossed several breach charges around the group and jumped out of the smoke. He pulled out the detonator and set off the breach charges hoping to send the titans into a world of confusion. Of course none of this was lethal...but it was going to hurt. He knew that some of titans would get out of the trouble but there was always going to be a straggler.