Armstrong acknowledged Aldrin's completion of the post landing checklist with "Engine arm is off", before responding to Duke with the words, "Houston, Tranquility Base here. The Eagle has landed." Armstrong's unrehearsed  change of call sign from "Eagle" to "Tranquility Base" emphasized to listeners that landing was complete and successful. Duke mispronounced his reply as he expressed the relief at Mission Control: "Roger, Twan— Tranquility, we copy you on the ground. You got a bunch of guys about to turn blue. We're breathing again. Thanks a lot."  
Primo is available in both oral and injectable form, but it has not proven to be a successful mass building drug when taken orally because the liver usually destroys any traces of Methenolone Acetate that is ingested through the mouth. Similar to Anavar, it is mild and contains less of those steroid properties which leads to water retention or acne or any other side effects that are related to estrogen. This makes Primo a very successful drug amongst those who become easily prone to side-effects like skin problems and digestive issues.