Ihea 'oe i ka wa a ka ua e loku ana? - S10-E12
Visible crew/equipment: McGarrett and Magnum are working together in this crossover show. They leave a suspect's house and before the scene changes they are outside, and through the door windows you can see a crew member through the glass moving right to left. This is supposed to be an empty house. (00:19:00)
Chosen answer: They are Junior's SEAL buddies.