Believe it or not, it looks like Clint Barton's heading back to SHIELD. With principal photography for Hawkeye now underway in Atlanta, Jeremy Renner is giving fans a tease of a potential plot point. Saturday afternoon, the actor shared an image to his Instagram of himself in character, his quiver in tow. On the quiver is none other than the SHIELD insignia, paying tribute to Clint's past as an agent of the clandestine organization.