Sadly, that is what happens in a lot of these shootings - - bad guy goes to a no-gun-zone and opens fire, knowing that there is zero resistance

Or the route he took is a common route to the airport....not the main route to the airport....

Bad guy exits the van with a handgun in each fist.

 Vans are great for kidnapping purposes. Plus if windows are tinted or if the seats are out, then you can’t see if someone is on the floorboard.

The problem is what you call “reasonable gun control”. IMO, unless you can guarantee that the bad-guys follows the laws, you have a right to protect yourself. What’s the difference between having 2 x 10-round magazines vs a 20-round magazine? The former is legal in CA while the latter is not. Is that reasonable?

You never know what the bad guy’s thinking - - and if he’s on drugs, then it’s even more of a wildcard.

I too, own firearms but I am not in the habit of carrying them around unless I’m going to the rifle range or skeet/trap range.