North Korean leader Kim Jong Un has ordered front-line military units to enter “a wartime state” after an exchange of fire with South Korea, his country’s state-run Korean Central News Agency reported Friday.

The announcement, employing bellicose language typical of North Korea, adds to the edgy situation in the region.

The two sides traded artillery fire over their heavily fortified border on Thursday afternoon, according to the South Korean Defense Ministry.

Two shells came from the North Korean side, the ministry said, and South Korea fired dozens of shells in response.

No casualties were reported from the exchange of fire.

I know it doesn’t sound like much, but North Korea is freaking crazy.  Well, Kim Jung Un is.  Last week, he put North Korea on its own unique time zone.  (North Koreans already have their own calendar. Instead of counting from the birth of Christ, they count from the birth of founding leader, Kim Il Sung. Kim was born in 1912 — known in North Korea as Juche 1, making this year Juche 104.)  And he’s got nukes (maybe).

Both North and South Korea are blaring propaganda messages over loudspeakers at each other.  Which is better than the alternative, I suppose.

This all comes as the United States and South Korea are engaged in joint military exercises.

Military analysts are saying this “military theater” rather than actual military engagement, and that Kim Jung Un has the most to lose from an actual military engagement.  That’s good — I hope HE knows that.

I see scattered reports that North Korea is having Internet problems….

#NorthKorea down twice in the past 12hrs as Kim Jong Un threatens attack of #SouthKoreahttp://t.co/SE99msX2Zjpic.twitter.com/LHAPusDXRL

— Dyn Research (@DynResearch) August 21, 2015

… but nothing in the mainstream news.  Maybe we’re messing with North Korea.  Or maybe the change in time zones is screwing them up in a Y2K kind of way.

Tensions are always high when it comes to North Korea, but this is a little unnerving.