Waco is a city in and the county seat of McLennan County, Texas, United States. It is situated along the Brazos River and I-35, halfway between Dallas and Austin. The city had a U.S. census estimated 2022 population of 143,984, making it the 24th-most populous city in the state. The Waco metropolitan statistical area consists of McLennan, Falls and Bosque counties, which had a 2020 population of 295,782. Bosque County was added to the Waco MSA in 2023. The 2023 U.S. census population estimate for the Waco metropolitan area was 304,865 residents.

The Texas Ranger Division, also known as the Texas Rangers and also known as Diablos Tejanos, is an investigative law enforcement agency with statewide jurisdiction in the U.S. state of Texas. It is based in the capital city Austin. In the time since its creation, the Texas Rangers have investigated crimes ranging from murder to political corruption, acted in riot control and as detectives, protected the governor of Texas, tracked down fugitives, served as a security force at important state locations, including the Alamo, and functioned as a paramilitary force at the service of both the Republic (1836–1846) and the State of Texas.