I told him I am not the Army and we're all adults. lol

Hmm, that's not what the statistics you just quoted says.Distribution by Head of Household's Race as a % of 50058 ReceivedNationalWhite OnlyBlack/African American OnlyAmerican Indian Or Alaska Native OnlyAsian OnlyNative Hawaiin/Other Pacific Islander OnlyWhite, American Indian/Alaska Native OnlyWhite, Black/African American OnlyWhite, Asian OnlyAny Other CombinationUS48471210101Although Black Americans are 47% they only make up 14% of the population of the US.Latino/Hispanic isn't mentioned, but this part does break that down.Distribution by Head of Household's Ethnicity as a % of 50058 ReceivedNationalHispanic or LatinoNon - Hispanic or LatinoUS1783So, that leaves 31% as head of household as white people.

With residents predictably angered by the encroaching move, the ever-reliable internet army also showed its teeth.

I think back to my days living on post in the Army trying to make my a/c produce icicles on the windows. 

He is getting discharged from the army in mid August.  

But I know from reading the news over the years that AirBNB is no stranger to lawsuits: they literally have a small army of nearly 150 in-house lawyers, consisting of top Harvard, Oxford, and Yale grads.

Detroit has properties worth 250K + (Indian Woods / Palmer Woods / Downtown) and Detroit has properties worth less then 10K and if you do not know where these borders are because you do not live or have not spent a significant amount of time in Detroit you are guaranteeing yourself a hardship.

I suggest you have them designate which tenant will receive the deposit refund, but put in the lease that you will name all roommates on the refund check, and it's up to them to work out cashing it and divvying it up.My experience with renting to techies in Silicon Valley, who wanted to room together, was they were usually Indian men. 

Vincent de Paul Society, Salvation Army, etc. 

The Army says "handle issues at the lowest level first".