newsreel narrator: by the summer of 1942, control of the atom bomb projec passes to the hands of the army under the code name manhattan engineering district. carr: the manhattan project really was a huge national effort. rhodes: and to plot out the industrial scale of the operation, they chose a dynamic, burly, six-foot-three, 240-pound general named leslie richard groves. he hated leslie. he went by dick. general groves had a problem. he was entrusted to hire the people that would build the atomic bomb. but he knew that we re talking about the people who are the finest scientists in the world. these are prima donnas. and now you have to have somebody who s gonna be the whipmaster.
you have to have somebody that understands the physics, who has a reputation, so that these prima donnas will follow you. carr: oppenheimer and general groves are introduced in the fall of 1942. and these two individuals are just about as different as you can imagine. but general groves saw something in him that apparently no one else saw groves: when meeting oppenheimer, you were immediately impressed. you couldn t help it. there wasn t a better man. rhodes: he chose oppenheimer against the advice of most of these leaders that he had around him in the scientific community. oppenheimer had never led any large enterprise. but oppenheimer was really good at explaining things. wellerstein: he was extremely charming, and he had this ability to sort of hold a lot of things in his head at once
you got to earn it. you got to work. and it requires a throughout of toil, tears and sweat, and we re going to do that. desantis and other presidential candidates will now be required by republicans to sign a loyalty pledge in order to qualify for the primary ballot. it s a news that some candidates aren t happy about. but what do voters think. cnn s randi kaye takes a look at that. it s a complete mess. agree with it? 100%. reporter: republican voter value la teen hernandez is 100% in favor of requiring a loyalty pledge to support the party s eventual nominee. and if they won t sign the pledge, they won t appear on the ballot. if you don t do that, you re a disorganized party, you re going to lose elections. you have your difference first in some of them. we don t want any prima donnas here. reporter: florida s gop
you have to have somebody that understands the physics, who has a reputation, so that these prima donnas will follow you. carr: oppenheimer and general groves are introduced in the fall of 1942. and these two individuals are just about as different as you can imagine. but general groves saw something in him that apparently no one else saw groves: when meeting oppenheimer, you were immediately impressed. you couldn t help it. there wasn t a better man. rhodes: he chose oppenheimer against the advice of most of these leaders that he had around him in the scientific community. oppenheimer had never led any large enterprise. but oppenheimer was really good at explaining things. wellerstein: he was extremely charming, and he had this ability to sort of hold a lot of things in his head at once
newsreel narrator: by the summer of 1942, control of the atom bomb projec passes to the hands of the army under the code name manhattan engineering district. carr: the manhattan project really was a huge national effort. rhodes: and to plot out the industrial scale of the operation, they chose a dynamic, burly, six-foot-three, 240-pound general named leslie richard groves. he hated leslie. he went by dick. general groves had a problem. he was entrusted to hire the people that would build the atomic bomb. but he knew that we re talking about the people who are the finest scientists in the world. these are prima donnas. and now you have to have somebody who s gonna be the whipmaster.