1. in a position where you are likely to be criticised or blamed for something
be in the firing line/take someone out of the firing line
To be 'in the firing line' can literally mean to be in a position where you are at risk of gunfire or of being shot. Figuratively to be 'in the firing line' means you are in a situation where you are likely to be punished or subjected to criticism or blame because of your actions. "She was a big part of that decision. Now that everything has gone wrong she's bound to be in the firing line." similar in meaning to be 'in the hot seat'. This is an informal idiomatic expression.