Looking at differently [2] - take the population of the US; subtract all who are not citizens, under-age, over-age, non-computer users, have no bachelors; subtract all who cannot secure a clearance, subtract all who lack the specific skills required for the role, subtract all who are not willing to take a mediocre salary, and, and, and... What do you have left?
There might be a correlation (we do not know, as we do not have a percent of Mormons in the FBI), but the factors identified are also readily present in several other groups.
I could have written an article that the US DoD hires disproportionately color-blind people. We should investigate! (I can back this up with real numbers too ;))
[0] Pew Research Center: Religious Lanscape Study https://www.pewresearch.org/religion/religious-landscape-stu...
[1] FBI: How many people work for the FBI? https://www.fbi.gov/about/faqs/how-many-people-work-for-the-...
[2] US Census https://www.census.gov/quickfacts/fact/table/US/PST045221
References moves an article from tabloid toward journalism.