One thing that an NCO told me when I joined the Army a long time ago was: “Buy a good multi-tool. Keep it with you.” 22 years later, I don’t go anywhere without my Gerber, well, with the exception of Security Theaters and such, but you get the idea. That tool, and its predecessors, have literally saved lives.
Yes, I do have another one. No, I’m not posting it, but it’s also a Gerber — standard FAST.