The Navy said after the sentence that it believed "justice has been served" by the outcome of the civilian case, and it decided not to pursue a separate court-martial — a trial in military court — which could have led to Mackie getting a dishonorable discharge. Instead, he got an administrative, "other than honorable" release.
I don't know how military court works, but looking at this case, this was not an intentional murder. The sailor was playing around with the gun, apparently, but the question is were there any witnesses? Also, remember that news articles are from the POV of the police, and in a court of law it is not always that easy to convict.
The shooting took place in February 2009 in a new apartment complex for Navy sailors at Huntington Avenue and 31st Street. Mackie put a gun to the back of Trask's head and pulled the trigger. Trask died in her Navy uniform.
Mackie, a petty officer, first told police he had tripped, and then said he accidentally discharged the gun while cleaning it. He finally said he was fooling around with the gun and didn't realize it was loaded.
This is highly confusing, which is why this is what the prosecutors did:
The original second-degree murder charge was reduced to manslaughter as part of Mackie's guilty plea.
It said earlier in the article "involuntary manslaughter".
It seems they would have had trouble getting a conviction of second degree murder, as I assume (not sure) that there were no witnesses, and the forensics would only be a range of scenarios of how the shooting occurred.
Having said all that, perhaps a military court is less stringent than a civilian court, and it would be easier for them to convict him. But with how it stands, how does the Navy deal with an accidental shooting where there is negligence? I really don't know. If this was murder in the first degree, then they would have moved forward on it with a court martial and so forth. With involuntary manslaughter, I don't know what is the norm.
Perhaps someone who understands how military courts work can weigh in with some insight?
Horrible tragedy, of course. My thoughts go out to the family, and good on them to continue to fight for this and enlist Sen. Kerry's help.
Edit: Here is a short article on the WH turning down the court martial request:
http://www.navytimes.com/news/2010/01/ap_court_martial_trask_case_012210/A sailor convicted of manslaughter in the death of a fellow sailor will not face a court-martial.
The White House has turned down a request for the military trial from the parents of 20-year-old Caitlin E. Trask, who was killed nearly one year ago by Darren W. Mackie.
...
In a letter to the Trasks, an Obama administration official deferred to the military’s decision in not seeking a court-martial.
That sounds pretty final to me. Here is the plea:
http://www.navytimes.com/news/2009/09/navy_sailor_shooting_090409w/Mackie pleaded guilty earlier this year to a manslaughter charge in the Feb. 12 shooting death of his fellow sailor and off-and-on girlfriend, Information Systems Technician Seaman Caitlin Trask, 20.
Mackie told the judge he was joking around when he held the gun to Trask’s head and pulled the trigger, said one of the prosecutors, Charizza Rodgers-Johnson.
Trask’s mother told Navy Times she hopes the Navy will court-martial Mackie.
“Other sailors have been court-martialed for less. It’s the right thing to do. It’s a common-sense thing to do,” said Mary Trask of Massachusetts.
But a spokesman for Naval Surface Forces said Mackie’s command has decided not to seek a court-martial.
“Appropriate administrative action will be taken,” said Lt. Cmdr. Herb Josey.
Now the source of this article for the plea portion was the prosecutor. So it seems that they decided it was not an intentional murder. As to what Mary Trask said about people being court martialed for less, I honestly have no idea how that all works.