United States Marines have been called “The First To Fight,” and “The Deadliest Weapon In The World,” and they are killing themselves.So are soldiers, seamen, and airmen in the U.S. military. One study estimates 22 veterans of all ages commit suicide every day.Three hundred thousand veterans and active duty service members have been diagnosed with traumatic brain injury since the wars in Iraq and Afghanistan began.Researchers have started to see a link between those brain injuries and the suicides. But, they need a lot more information.Retired Marine Joshua Caskey of Cranberry was injured when a suicide bomber sped into his barracks in Iraq in 2007.Two of his fellow Marines committed suicide and he considered doing the same.“Absolutely,” said Caskey. “On numerous occasions, probably more times than I can count. And It got pretty desperate at times. It got to the point where it almost happened.”Last year the U.S. Department of Defense opened its own brain repository to collect brain tissue from deceased service members. The Pentagon wants to look closely at brain tissue from deceased veterans to try to find new treatments for brain injury.There are four brains in the new brain bank. They need 100 to start getting answers said Dr. Daniel Perl, the brain bank’s director.Rep. Tim Murphy, R-Pa, said, “It is a start, it is a very important start, I think big things will come out of this, but they need more.”The military is not asking service members to consider brain donation upon their death. And no one is permitted to approach next of kin to ask for consent for brain research when a service member dies.Murphy and Caskey believe that policy should be reconsidered.It is a delicate subject and it is not easy to talk to enlisted men and women about. It is even more challenging to find the words when delivering the news to parents or a spouse that their loved one in uniform has died.“When that moment comes when that uniformed officer and a chaplain show up at the door of a spouse or a mother and father that's a pretty traumatic time,” said Murphy.“And they don't want to add more to it. But, they're reviewing this policy because when they find out that many a family member would say yes, if this helps save the life of another soldier."Sorting out who wants to donate brain tissue when they die is important so Dr. Perl can do his job and the men and women who dedicated their lives to their country stop killing themselves.“Just thinking of some of the guys I know that are really bad off, knowing that they could be helped also,” said Caskey, “not just myself, but, the help that they would receive, would make me just ecstatic.”