FYI - a general report on suicide rates. https://www.cdc.gov/mmwr/volumes/67/...cid=mm6744a3_w
There seems to be an indication that firearm suicide rates are increasing in general. It might be increasing even more sharply among older white males. Economics, life stress factors are suggested. How these interact with the particular nature of law enforcement stress should be investigated.
A link between firearms availability in the USA and suicide gets tangled with gun rights and gun control agendas by some scholars and advocates. Difficult issue to parse objectively for some.
Terrible situations for all involved.