The SOCOM 4 multiplayer gameplay trailer shows actual in-game footage. You'll play as an Ops Commanders leading a 5-person squad on various missions. Judging by this trailer there will be quite a few mission revolved around blowing stuff up. If this trailer isn't enough to get you ready for SOCOM 4's release here's a photo gallery too.
SOCOM 4: U.S. Navy SEALs will offer single player, multiplayer and Move compatible modes. The multiplayer mode will allow up to 32 players and up to 5-player co-op mode. SOCOM 4: U.S. Navy SEALs is a PS3 exclusive set to be released on April 19, 2011. Pre-order to get that bitchin' gun.