The Las Vegas shooter might have tried to blow up a tanker truck using incendiary rounds.
Anyone can get these off the internet, which can be fired from even a handgun.
Gas stations are refilled by these tanker trucks. Hopefully DHS tries to limit the accessability of pressurized LPG tankers to high density urban areas. I would hope so.
Back in July 193 people got killed when one of these tanker trucks blew up accidentally in Pakistan.
It's a small stretch of the imagination to see one of these used in a terrorist attack.
God Bless America.