This is my 2nd TJ to break a control arm off the frame. This is a 2004 TJ, and there wasn't any sign of rot/rust from outside the frame. It rotted from the inside out. Already reported it to NHTSA, and I'm trying to get everyone else I know with TJ frame rot issues to report them to NHTSA as well. It's absurd for a 12 year old vehicle to have suspension components rot off.