Silver War - S3-E4
Continuity mistake: When inside the Smithsonian, Tony is fooling around with a bear. The baseball hats on all 3 agents have black trim on the brim, then white trim, then black trim. Zeva says her hat has a 9mm hole, and pokes a finger through a hat with a black trim. Gibbs says it is for ventilation. Then she drives home, the hats have white trim, and hers has no hole.