Six other Marines who were injured in the accident were treated for non-life threatening injuries, a 1st Marine Division news release says.
McDowell was a platoon commander with the 1st Light Armored Reconnaissance Battalion, according to the news release. He was commissioned in May 2017 and his awards include the National Defense Service Medal and the Global War on Terrorism Service Medal.
The cause of the rollover is under investigation.
"We recognize that military operations are inherently dangerous and we take extreme precautions to ensure the safety and welfare of our Marines," the news release says. "This is a tragic accident and we are heartbroken at the loss of a member of our Marine Corps family. We will do all we can to comfort the family, friends and colleagues of Lt McDowell."
An aerial view of the Pentagon building in Washington, June 15, 2005. U.S. Defense Secretary Donald Rumsfeld defended the Guantanamo prison against critics who want it closed by saying U.S. taxpayers have a big financial stake in it and no other facility could replace it at a Pentagon briefing on Tuesday. (Reuters/Jason Reed JIR/CN)
The Pentagon is sending nearly 1,000 more troops to the Middle East as part of an escalating crisis with Iran that defense officials are struggling to explain.
The Marine lieutenant colonel removed from command of the 1st Reconnaissance Battalion in May was ousted over alleged "misconduct" but has not been charged with a crime, Task & Purpose has learned.
Lt. Col. Francisco Zavala, 42, who was removed from his post by the commanding general of 1st Marine Division on May 7, has since been reassigned to the command element of 1st Marine Expeditionary Force, and a decision on whether he will be charged is "still pending," MEF spokeswoman 1st Lt. Virginia Burger told Task & Purpose last week.
"We are not aware of any ongoing or additional investigations of Lt. Col. Zavala at this time," MEF spokesman 2nd Lt. Brian Tuthill told Task & Purpose on Monday. "The command investigation was closed May 14 and the alleged misconduct concerns Articles 128 and 133 of the UCMJ," Tuthill added, mentioning offenses under military law that deal with assault and conduct unbecoming an officer and gentleman.
"There is a period of due process afforded the accused and he is presumed innocent until proven guilty," he said.
When asked for an explanation for the delay, MEF officials directed Task & Purpose to contact 1st Marine Division officials, who did not respond before deadline.
The investigation of Zavala, completed on May 3 and released to Task & Purpose in response to a Freedom of Information Act request, showed that he had allegedly acted inappropriately. The report also confirmed some details of his wife's account of alleged domestic violence that Task & Purpose first reported last month.
On Monday, Staff Sgt. Daniel Christopher Evans received a suspended sentence of 60 days in jail, said Samantha Dooies, an assistant to the New Hanover County District Attorney.
Evans must complete 18 months of unsupervised probation, pay $8,000 in restitution, complete a domestic violence offenders program, and he cannot have any contact with his former girlfriend, Dooies told Task & Purpose. The special operations Marine is also only allowed to have access to firearms though the military while on base or deployed.