Originally Posted by FNGFO

We had the North Face styled jackets at my last job, but no liner was offered. Some guys modified their jackets with a zip in liner, but I never found that I needed it. They’re plenty warm enough for 99% of all operations.

And just bring another jacket for civvy work. Good grief. You’re only out for 4 days max which means you’ve only got 3 uniform shirts (if that), maybe an extra pair of pants and your civvies. There’s plenty of room in the bag.