JIMMY FALLON: Trump also made a pretty big addition to his cabinet. Yesterday, he announced his new pick for national security advisor, Lt. Gen. H.R. McMaster, who is actually Trump's third choice for the job. He's like the RC Cola of national security advisors. That's right, his name is H.R. McMaster. Incidentally, a McMaster's is also the best degree you can get from Trump University. 'Mom, I got my McMaster's! It came with a toy!'