ABC has debuted a teaser image for Marvel's Agents of S.H.I.E.L.D., leading into its Comic-Con 2013 panel on Friday, July 19 at 1:45 PM in Ballroom 20. While we're not sure what "classified" information will be revealed this week in San Diego, this highly-anticipated Q&A will surely be one of the highlights of SDCC. Since ABC hasn't revealed when the series premiere will air yet, it seems likely that announcement will be made on Friday. Stay tuned as we bring you all the new details revealed in this panel at the end of the week.