The Donald isn't going to use nuclear weapons, please darling get a grip.
If Kim actually nukes South Korea. It can really happen for President Trump to make the decision after that.
Well of course if North Korea is that unhinged to use nuclear weapons first, then of course a severe response would be completely justified.
This is why NK nuclear capabilities should be neutralised, so they cannot cross that Rubicon.
A serious response like MOP4?
Can you spell it out?
MOPP is Mission Oriented Protective Posture, it goes from MOPP Level 0 to MOPP Level 4.
MOPP 0 is that In-Theatre you are carrying just your protection mask, but all your other gear is accessible if the MOPP Level is raised by your CO.
MOPP Level 4 is the most serious situation, therefore your CO will instruct the whole unit to put on ALL protective gear, if the situation involves anything radioactive, biological or chemical then you'll be instructed to put on your NBC suit, which is an acronym for Nuclear, Biological, Chemical suit.