Tony survives and is in critical care. They are trying to make it look like Jack killed Palmer. Jack's not having any of this. He takes a helicopter and meets Chloe. They then go to hotel where Palmer was killed. Jack goes to the penthouse after knocking out an FBI agent and taking his jacket and I.D. He is confronted by Palmer's brother. Talks him out of thinking that he killed his brother. Gets a name in an encrypted file and the guy works at the airport. The boys mom meets them there. He goes back to his mother. Jack goes in the airport, finds the guy. The guy takes a suicide pill and dies. The boy sees the terrorist's getting out of a van and goes into the airport to warn Jack. The terrorists take over the airport and Jack is stuck inside. They don't know he's there....
Oh, you said DON'T ruin it for you. I'm sorry.