Lacy narrowed her eyes towards the direction he was looking. She could see heat signatures but not from where she was standing. "I thought I saw something but I'm going to be optimistic today and say it was probably a bird," she stated, looking back at him with a smile. 
Ace was basically holding his breath, refusing to move from his spot. If he moved then they would surely notice him. He had to wait for the perfect moment to lift into the sky to avoid the tension.