The least credible source is the US government. Virtually every incident reported by the DOD, for instance, which has had independent reports has been demonstrated to have been wrong. False. Prevarications. Lies. Bullshit. Nonsense. Feelgood pap for the masses, unrelated to the actual occurences. Like the US female who fought the Iraqis until she ran out of ammunition. She surrendered to an Iraqi lawyer who took her to a hospital and notified the Americans to come pick her us. (After a hellacious firefight, the DOD reported. Fiction.) There are too many to cite, but they all fall into the Tillman mold.

The last source regarding the efficacy of US forces is the US government. (Remember that fat US general(Schwarzkopf) during the first Iraq war showing how good American missiles were? Turned out to have been 95% fabrication.)