“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]
(..) state of Montana, alone. Borders are closed and flights have been grounded, Panic buying of gas, water and food continues to escalate and Federal authorities have temporarily lifted all caps The ATF has put a temporary ban on new gun licenses, hours later and no further development (..)2016 Arrival