Sort of. Those were on Minuteman missiles, and that was put to a stop long ago. The PALs in the B-61 these days should be much more sophisticated and much less useless.
As I said in my other reply, I'd totally believe it if this was happening in past decades, but it seems much less likely now.
As I said in my other reply, I'd totally believe it if this was happening in past decades, but it seems much less likely now.