Kangnam I turns around and heads back to North Korea, which can only mean one thing...

... They're checking to make sure they locked the front door when they left. 

Either that or someone thinks they might have left the water running. At any rate, they're going back, after being tracked by the American navy for more than a week. 

One might speculate that this was all a test of the US's anti-proliferation will to track and intercept North Korean vessels. Alternatively, maybe they left an iron plugged in. 

[top: The Kangnam-1 heads to Burma. bottom: The Kangnam-1 returns home.]