It depends which SHTF scenario you are referring to,
1) outside factors, such as national infrastructure collapse, Meteor/Nuke hit, Hurricane/Tornado where a short term SHTF scenario with limited looting/rioting and casualties from same being the main concern. In this scenario order will be restored, it just might take a few days/weeks to get back to normal. In that case we bunker down and wait it out, rely on the generator, and stored food/water for as long as needed, and work with the neighbors for common defense.
2) internal factors, despotic govt', marshal law, etc... Juice up the truck, grab the passports, head for the border (Canada = 2 Hours). Be gone before they know you left. Unfortunately, with my family's welfare at stake, I can't stand and fight, unless it is a necessity to escape with them intact.
APEX