Well, he could stage a really cheap parade for the press on April 1 and just fill a reviewing stand on Pennsylvania Avenue with officials and call out some high school bands.
Have the cops prepare as usual, get an announcer with a good imagination, space the bands really far apart, then all the officials and staff listen to some speeches, have Trump stand up and surprise the press with a speech to honor our new stealth forces, and then have the officials act like they are watching “invisible tanks” and “stealth units,” roll by between the bands....
Would be a great prank.