North Korea Planning 2nd Test?

In the news now there are reports that North Korea may be planning a second nuclear weapons test. After the unanimous vote for a harsh warning and sanctions against North Korea from the U.N. security council, further tests would heighten tensions in the region even further. I'm not considering jumping on the next plane but the situation here will likely get worse before it gets better. My wife denies it but I swear that there has been increased military activity here since the last test. We live only a few kilometres from the U.S. airforce base here in Gunsan so war planes flying overhead are not a new phenomenon but I've noticed more recently (maybe I'm just more sensitive to it right now). The most startling event was an alarm sounding all around the city - it sounded like an air raid warning from a movie. I've heard one before when I was here four years ago and just as in my previous experience, no one else seemed to notice. I've been told that these drills are common but this is the first one I've heard in the 7 months I've been here. To have one a week after North Korea conducts a nuclear weapons test either indicates an increased level of tension or an amazing coincidence. I'm hoping it's the latter.