Premise: Thiokol ( variously Thiokol Chemical Corporation , Morton-Thiokol Inc. , Cordant Technologies Inc. , Thiokol Propulsion , AIC Group , ATK Thiokol ; finally ATK Launch Systems Group before becoming part of Orbital ATK ) was an American corporation concerned initially with rubber and related chemicals , and later with rocket and missile propulsion systems . In the mid-1950s the company bought extensive lands in Utah for its rocket test range , and in 1986 was found at fault for the destruction of the Space Shuttle Challenger and the deaths of its astronauts .
Hypothesis: Thiokol was concerned with technology.
Label: ENTAILMENT