Sartorial splendor note: Looks like Petraeus had ditched the grey-green Green Machine "Unicam" fatigues and gone with the new pattern they've gone with that looks more like the Marines' MARPAT (which was CADPAT first, the Canadian camo pattern, before it acquired little globe-and-anchor Army Puke Repellent countermeasures).
I forget what the new pattern is called -- Multicam or some such.