Chronic health problems such as cardiovascular disease, diabetes, obesity, cancer and kidney disease account for more than 75% of the nation's $2.7 trillion in annual spending for medical care, says Ursula Bauer of the Centers for Disease Control and Prevention.
He might need to have one while waiting for a TS clearance to go thru. They take from 1-4 months for the interim, the TS clearance could take from 1 month to 2 years from what I have seen. I had to wait 2 years for the final one to go thru. As I said I have also seen people get them really fast too.
If you look at performance.gov and check out Q4 for 2016, you'll see that 90% of investigations are adjudicated in 21 days for secret clearances, 22 days for top secret. The bulk of the entire process is in the investigation phase (208 days average for TS in Q4 2016).