Just quick tip on Safety First. Apparently, Safety First works in all directions at 20 meters. Tried it the other night on Jungle Base. Not my favorite perk in the world, but it picked up all the mines on the 2nd floor while I was still on the 1st floor. Also shares the info with your teammates. Useful for when you need or want to make that rush on building maps. Not sure if anyone knew this, since so few of us even care to use the perk. Figured I'd share for the next time a team of us take on those mine-heavy building maps.