Alaska State Troopers have identified the two men injured in a Glenn Highway crash Tuesday afternoon, crediting passersby with providing immediate aid before emergency crews arrived at the scene.

In a Wednesday AST dispatch, troopers say they responded just after 4:15 p.m. Tuesday to the single-vehicle wreck at Mile 116 of the Glenn, near Eureka.

“Investigation revealed that a southbound 1999 Subaru Legacy drove down the embankment, rolled several times, and came to rest after striking a tree,” troopers wrote. “Both the driver, Ryan Palmer, age 21 of Wasilla, and the passenger, Michael Sunderland, age 19 of Palmer were ejected from the vehicle and seriously injured.”

With the arrival of responders delayed by the crash’s distance from population centers -- AST’s response was dispatched from Glennallen, about 70 miles northeast of the crash site -- people on the highway were the first to reach the scene.

“A passing crew of Chena Hotshot wildland firefighters and their two medics cared for the injured and extinguished a fire which was caused by the crash,” troopers wrote. “A passing (U.S. Air Force) physician from (Joint Base Elmendorf-Richardson) also provided care.”

LifeMed air ambulances flew both Sunderland and Palmer to Providence Alaska Medical Center, where Sunderland is listed in serious condition and Palmer is in fair condition as of Wednesday afternoon.

Troopers believe neither Sunderland nor Palmer were wearing seat belts, with AST spokesperson Megan Peters saying it’s not yet clear pending toxicology tests whether drugs or alcohol were involved in the crash.

“The trooper doesn’t think so, but we did the standard blood draw for serious injuries,” Peters said. “It’s going to be under investigation for cause and circumstances.”

Friends have established GoFundMe accounts to help cover hospital costs for both Sunderland and Palmer, with each account set for a $50,000 funding goal.