where is the Ennis locker key

[gatzgames]

Hello, I was playing the Dead Money dlc in the mixed signals mission and there is a part in which you have to put Christine in her place for the inauguration, for this you have to use the terminal that is in front of the elevator, it happens that for the terminal you need a password and to get that password you have to access the Ennis locker, the problem is that I dont have enough ability to open locks, and I can't find where the key for the ennis locker is
so if someone could tell me where the key for the ennis locker is located (if possible with maximum detail of where the key is)

Thanks

[bisp]

bro just use google next time.
https://fallout.fandom.com/wiki/Fallout:_New_Vegas_keys#Ennis.27s_key