Picture Yourself in Their Boots. Chronicle your exploration of TXDPS state of the art law enforcement equipment at “selfie stations”.  Wear the gear of a DPS trooper from the past at the vintage trooper “selfie station.” Meet police dogs, the Mounted Patrol, plus more! DPS Headquarters (5805 N. Lamar Blvd., Austin, TX 78752) from 11 a.m. – 4 p.m. on Sunday, September 23, 2018.