When was the last time the US lost track of multiple nukes?
The movie "Broken Arrow"
Now if you want losing track of nukes, might I point you towards Russia, who took an interesting approach to guarding things. In Sovjet Russia, warhead guards YOU!
They were is US custody so what was the problem that's what those bombers were designed for.
The problem was that they lost track of them. Although they were in no danger of falling into enemy hands, the fact is that that kind of disorganisation could lead to missiles going missing - being stolen or simply lost and later found by the wrong people (i.e. anyone). So this
time the missiles were safe - on a US bomber piloted by US crew that are loyal to the US and had no intention of dropping/launching them. What about next time? Because of the measures being taken, there probably won't be
a next time, which is good.
Also, it sends a message to the world at large. The message is "We're bumbling about and don't keep track of our weapons of mass destruction. You don't actually need to take us seriously." Because of the response by the higher-ups, the message is more likely to be "A mistake was made, and you shouldn't count on it happening again."