en la línea de fuego
In the Line of Fire; En la linea de fuego
= in the hot seat, in the front line, on the front line
Ex: The article is entitled "Sitting in the hot seat: some thoughts from the reference chair". Ex: Because they are in the "front line," reference librarians frequently determine whether a library is successful in serving its clientele. Ex: The World Food Programme, the world's largest humanitarian organisation, is on the front line of the fight against climate change.