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Staff Sgt. Scott Dickinson, 29, was eulogized at College Avenue Baptist Church on Saturday. He was one of three Marines killed Aug. 10 in southern Afghanistan in a "green on blue" shooting by an Afghan police officer.

Dickinson's friends said they remember his signature smile.

"Everyone remembers his smile… it made everyone else feel good being around him," said former classmate Joshua Crespo.

Dickinson grew up in San Diego and attended Horizon Christian Academy in Clairemont. During high school, Dickinson was a manager on the baseball team. Kerry Keehl was the coach.

"He was just a great guy," said Keehl. "He was just a servant. He served everybody on our team."

Candice and Peter Savage's son was Dickinson's best friend.

"He was so fun to have around because he was so humble and easygoing… the kind of person you could just invite to live with you," said Candice Savage.

Peter Savage added, "I was always happy that he was my son's friend."

Immediately after high school, Dickinson joined the military.

"He was sure that that's what he wanted to do, and he wanted serve in the Marines," said Candice Savage. "He wanted to serve our country at that level."

Dickinson was with the 1st Marine Special Operations Battalion from Camp Pendleton. He was on his second tour of duty in Afghanistan.

Dickinson is survived by his wife of three years as well as his parents, brother and sisters.