Does anyone know what Monkeywerx is referring to? Is he inferring we're all going to die?

At 9:00 He's talking about sub hunter planes and China and Russia both having 70 subs each deployed and then he said:

“If things go hot, it’s going to get pretty crazy at the end of the day because everything is going to be coming out of the water, at least for the couple of minutes before we all go white into the light.”