Sad... This "kid/adult" otherwise was SMART, but apparently not smart enough
If it was him, then he wasn't smart enough to write his way into a legit excuse to defer the exam.
According to this:
It seems to me that he had quite a promising future ahead of him. Something must've derailed his studies or studying enough to get him off track to not be ready for the exam/s.
Tragic waste. And, he's just adding yet another bit of injury to the recent string of exchange/foreign/immigrated student crimes by someone hailing from Korea. One recent one coming to mind is the med or nursing student who gunned down multiple people in Oakland, CA in late 2011 or early 2012. But, this one didn't kill anyone, only sent dangerous threats.
What he probably had not put into his calculus was the likelihood of the recent Boston Bombing incident putting Massachussetts on an ever-high alert, meaning probably EVERYONE in MA is being sniffed more aggressively. He should have taken the exam fail rather than epic/social fail.
Probably, though, since it seems he was in the USA at age 16, he has not yet served nor chosen a nationality, as all able-bodied South Korean males not in a special exemption status (father was a hero; missing rear molars; missing a trigger finger; colorblind; misaligned joints/arms/feet; last surviving son in a family; and a bunch more that exist), he probaby will be released from having to serve if his has not chosen a country by age of majority. His parent probably are reeling to and fro in agony.