A friend of mine and I were discussing guns and how to safely carry. He insists that LEO's carry with an empty chamber so that if a bad guy gets the LEO's gun he has to cock it first before firing it. I think that may have been the case when semi-auto's were first being widely issued as service guns (was that in the late '70's?), but these days I wager that 100% of LEO's carry with one chambered and another round added to the magazine and then re-inserted. I would also wager that this is how y'all carry off duty as well. So how was it back in the day and how is it now?