Lt. Roberts is assigned to carry the nuclear football. That would never happen because Roberts did not receive a Yankee White background check, which is required and he has the rank of O-3. All personnel that carry the football are O-4 or higher.
Bud would never be chosen to carry the nuclear football. He is a JAG officer not a line officer who has combat experience.
It is shown that the nuclear football is handcuffed to Bud. In reality, the nuclear football is never handcuffed to the military aide.
There are around five aides at one time assigned to carry the football. Furthermore, there should be a spare football in the White House and one assigned to the Vice President, Therefore, first Bud should have first passed it to another aide before using the toilet. Second, his tour of duty should be more than a week.