"CAS? CAS!?" Dean yelled as he held Sammy up against the side of the Impala "screw him" Dean muttered helplessly trying to get Sam in the Impala
"Falling angels?" Sam gasped after gritting his teeth from the pain, the quick thought that he was hallucinating or losing his mind stuck Sam with fear but was quickly replaced with pain. Sam was having trouble seeing but he could have sworn his whole arms were now glowing; he tried to look at Dean. Sam had experience immense pain when he was in the pit but this was new like he was an infection dropped into Hydrogen peroxide, his brain was practically absorbed in the pain and he wheezed, "Dean!" before his body shook and the and the pain that was originally in his arms then upper body shoot through and claimed his whole body. Sam heard yelling in the distance and his name being frantically called.
An angel bombed close to the boys and Dean turned in awe, terror, and disbelief then he heard Sam choke out his name. Immediately Dean turned back to his brother who all a sudden shook, had a spasm and started yelling then screaming in pain.
"SAMMY!SAM!SAMMY!?" Dean yelled back in horror as his heart wrenched in two, he grabbed his mess of a brother with both arm around his chest and shoulders. Dean didn't realize he was crying as he finally hauled got the unresponsive, screaming Sam into the back seat.
Get him to the house. Get him to the house. He'll be okay there Dean Thought in circles referring to the Men of letters fortress. Dean floored it. Sam's Screams turned to yelps then suddenly stopped. Sam's Arms were still glowing white light, "Sammy!? Sammy you hang in there!" Dean yelled allowing himself to take his eyes off the road to look at Sam but couldn't risk stopping the Impala.
Finally the tiers screeched to a stop, and Dean jumped out of the Impala ripped the back door open. Sam tumbled out Dean frantically lifted him up around his shoulders and called out to Kevin. Kevin stumbled out the door looking like a wreck a minute later and Dean-taking no notice of Kelvins' state- and Kevin Dragged the glowing giant inside. They laid him on a bed Dean took his temperature over 109 and placed ice bags on his forehead. Kevin might have been asking Dean what was going on but Dean was only concentrated on his little brother and keeping him alive. Dean clenched Sam's hand and cursed god.