Question about Concealed Carry as a Bank Employee at the branch.

Hey Guys, like the title states I am a Bank employee and I was wondering when and if I was allowed to carry on and into the Bank premise. For some reason I was under the impression that if you had a full time security guard there with a gun then you couldn't carry versus if you didn't have one and you could carry. If that is the case what if the security guard is an Allied Barton person versus an actual cop that has authority to use his weapon.I arrive at 7:45am and security doesn't arrive until 9am. It is a branch located in a retail strip center, in Texas.Thanks for the insight! via /r/CCW http://ift.tt/2lqJvzS