Some of you may have seen the news headline that one terminal of the Sofia Airport was closed on Tuesday because of a bomb scare.  While the authorities did say some of the luggage appeared to have been in contact with explosives, none were found in the suspect van.  It appears to have been a case of a good level of caution, but no threat.  Both my body and my backpack have been singled out for extra explosive searches twice so far.  Should I stop carrying ammo in the backpack while I’m at home?