Loki sighed when he knew it was frost giants. He wasn't in the mood for any attacks. He knew he should have expected that though. He just hoped that Riza would be ok. He didn't want her hurt again.
He knew he would protect her "You need to be careful this time."
Tony had been informed and was already out and fighting. He didn't wait for backup. He knew Pepper would worry about him.
"Frost giants, they are frost giants." LOki told Jarvis. "Like me...," he sighed deeply.
Trey gets up, he doesn't like the sound of frost giants. He hopses his dad is safe, He followed Steve. 
Clint was looking around, he hears news of a battle and tried to get up. Banner tried to get him to stay in bed "Your not in any shape to fight."