A 2016 Hyundai Elantra was traveling south on U.S. 21 when Thirkill's 2014 Ford Focus turned into its path from Shanklin Road, said Cpl. Sonny Collins, spokesman for the highway patrol.
Thirkill, the driver, was killed in the crash, Allen said.
His wife and 5-month-old child also were in the vehicle, he said.
Thirkill was a water purification support technician with Marine Wing Support Division 273, said Second Lt. Kevin L. Buss, MCAS Beaufort's Communication Strategy and Operations director. He had been stationed at MCAS Beaufort since August 2017.
His Facebook page states that he married his wife, Olivia, in 2018.
Friends posted messages mourning Thirkill's death on social media Monday.
"My heart is absolutely breaking. Please keep the Thirkill family in your thoughts and prayers as they have lost such a selfless, brave, and incredible human being. Derrick Thirkill was a good friend to everyone he knew. He ALWAYS knew how to brighten up someone's day," one of the posts read.
Read another: "Waking up on a day supposed to be filled with happiness for all fathers, I'm sadden to hear that a close friend and brother passed away. Derrick Thirkill, you were a great leader and role model for many."
WASHINGTON (Reuters) - The U.S. military on Sunday accused a Venezuelan fighter aircraft of "aggressively" shadowing a U.S. Navy EP-3 Aries II plane over international airspace, in yet another sign of the increasing hostility between the two nations.
The encounter between the U.S. and Venezuelan planes occurred on Friday, the same day that the Trump administration announced it was sanctioning four top officials in Venezuela's military counterintelligence agency.
In this March 12, 2016, file photo, Marines of the U.S., left, and South Korea, wearing blue headbands on their helmets, take positions after landing on a beach during the joint military combined amphibious exercise, called Ssangyong, part of the Key Resolve and Foal Eagle military exercises, in Pohang, South Korea. (Associated Press/Yonhap/Kim Jun-bum)
Joint U.S.-South Korean military exercises scheduled for next month are going ahead, a top Seoul official said Saturday, despite a threat by North Korea to boycott working-level talks with Washington and possibly restart nuclear and longer-range missile tests.
(Reuters) - A former National Security Agency contractor was sentenced in Maryland to nine years in prison on Friday for stealing huge amounts of classified material from U.S. intelligence agencies over two decades though officials never found proof he shared it with anyone.