Slain hero Marine Sgt. Robert Hendriks returned home to Long Island on Friday.

More than 100 mourners were waiting at the Whitting Funeral Home in Glen Head, where Hendriks’s casket was transported by government hearse from Dover Air Force Base in Delaware.

It was the final leg of his journey home from Afghanistan, where the 25-year-old perished along with two other Marines on April 8.

“He was a very hard-working, patriotic boy that wanted to fight for his country,” said Mary Guastella of Glen Cove, who came to the funeral home with a waist-high Ol’ Glory.

“I brought the flag to show patriotism and support for the family,” she said.

First to greet the hearse were members of the local fire department and police and a contingent of 15 uniformed fellow Marines; all saluted.

The casket was borne into the funeral home by seven Marines.

Hendriks, hero FDNY firefighter Christopher Slutman, 43, and Sgt. Benjamin Hines, 31, of York, Pa., died when an improvised explosive device went off near Bagram Airfield, a US military base north of Kabul.

Hendriks had been scheduled to return home from his Afghanistan tour within the next two months, his family said.

Instead, his body was escorted home by his brother, Joseph, 24, also a Marine.

A wake will be held for Hendriks at the funeral home Tuesday between 1 and 3 p.m. and 6 and 9 p.m.

A graveside service will be held at 11:15 a.m. Wednesday at Calverton National Cemetery.