Question: Which booster was used to send the 1st American into orbit?
Sentence (from "Orion abort modes"): Based on the launch escape system found on the Soviet/Russian Soyuz spacecraft, the LAS, designed and manufactured by ATK for the Orion CEV, will be larger than the Soyuz version and will have more thrust than the Atlas 109-D booster that carried astronaut John Glenn into orbit in 1962.
Relevant evidence: Yes