You and Peeta always whistled to make sure each other were okay because you guys were best friends, Some people were fighting you and Peeta and you lead them off into the forest

Peeta: He would whistle, Tears were in his eyes not knowing if you were dead or not

Katniss: “Kira is gone Peeta.. We have to find somewere to hide out for tonight.” Katniss said picking up her arrows and Bow

There was a faint whistle that Sounded like Kira”s, But I seemed hurt

Peeta: He paused before walking off while hears the Whistle “Katniss, Did you hear that? I think it was Kira” He whispers