AKAL Security also known as Worldwide Security have contracts to provide security at a majority of the federal courthouses in the U.S. They also provide the security at several U.S. airports, including Jacksonville International. In the past, they had the contract for both Houston airports, however, I do not know if they still have the contract now. There was a huge controversy during the award of the Honolulu International contract because of the alleged connection of AKAL with criminal activity.
Essentially, this is the same Sikh company that provided security at the Murrah Building, then called TEG Security.