Speaking of security, I used to travel alot for work via driving(sometime was up to 70 nights a year), and I keep a pair of needle nose and pair channel locks in my bag to remove the .gov restrictor from the hotel shower heads so I can enjoy my unlimited hot water shower.
My last flight couple months ago I forgot to remove the tools from my bag, and they were in a little compartment zipped up.
Security pulls me to the side, pulls them out and looks at them. Hes like ehhhhhhh, I guess this is ok?, Hes looking at the needle nose, puts the needle nose back in bag and asks if I want to check the Channellock's cause i cant have those. Sucks I lost em cause they were made in America crapsmans. I said no, he tosses them in trash and I roll on. Same deal at return trip, the needle nose got questioned but let thru. I don't get it?
So Its ok to carry a dagger but not large pliers