“Who gave him the 'authority' to do this?” “He didn't do it 'on his own authority' [=he didn't do it on his own]; he was acting 'under the authority of' the company president.” [=the company president gave him the power to do it]
No one 'in authority' objected to the plan. = No one 'in a position of authority' objected to the plan. [=no one with official power to make important decisions objected to the plan]
This office has 'authority' over personnel matters. [=this office has the power to make decisions about personnel matters]
(..) requesting firepower. All I want is that you give these assholes outside our gate a low, loud "fuck you" flyover. My authority? My authority is that if you don't send, Americans are going to die. Including the one talking to you right now. (..)2016 13 Hours
(..) Local guards ran. Twenty to Tangos, that's a substantial force. We got to go right now, Chief. We have no authority at the consulate. We have no jurisdiction in this country. We're not supposed to be here. (..)2016 13 Hours