If you're worried about an "O" in the acronym, perhaps you should look up the full breakdown of the word Laser, or NASA. For example, they omit conjunctions and prepositions. Do you know what a preposition is? Or a conjunction? If not, I can help you figure that out, you seem to be struggling quite hard with that.
Beyond that, in this case, with the acronym I made for Trump in five seconds, the word "of" can be omitted from the entire acronym. So, when you ask "Who's Trumop?" One has to point out the how very weak their counter is to the acronym is. Reason being that if they follow this logic that prepositions should be included in acronyms. NASA becomes NAASA and laser becomes labseor.
I mean, I'm shocked that this evidently needed explaining. One would assume it's common knowledge.