I'd give him a fist bump. I'd follow that by looking him in the eye, pounding my heart twice with my fist, then kissing my index and middle fingers simultaneously before putting up the peace sign to the skies above.
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Application received: 11/07/2012 (California Center)
Biometrics completed: 12/10/2012
EAD / DACA Approved: 03/21/2013, 08/31/2015
Driver's License: 05/14/2013