He may be grabbing a latte on the way to work. You can always tell the people who haven't been around guns. If he was option 2 they wouldn't have even seen him till it was too late. Thank God for Law Abiding Citizens! JMHO. SKOL!
If I was a mass shooter, and saw this guy...first thing I'd do is sneak up behind him and put one in the back of his head before he even knew what was happening. This is why I prefer concealed to open carry.
If he was the latter, a caramel latte is certainly not what you'd be grabbing. You'd either be dead or frantically searching for the source of all the blood. Besides that, fuck Starbucks and fuck caramel lattes.