Michael Arnold, 59, of Lorton, Va., was a Navy veteran and avid pilot who was building a light airplane at his home, said his uncle, Steve Hunter.
"It would have been the first plane he ever owned," Hunter said in a telephone interview from Rochester, Mich., Arnold's hometown. "It's partially assembled in his basement."
Hunter said his nephew retired from the Navy as a commander or lieutenant commander and had previously been stationed at Pearl Harbor in Hawaii. He worked at the Navy Yard on a team that designed vessels such as the USS Makin Island, a Wasp-class amphibious assault ship used by the Marine Corps.
Arnold and his wife, Jolanda, had been married for more than 30 years, Hunter said. They had two grown sons, Eric and Christopher.
Hunter said Arnold returned to Michigan for Labor Day to visit his 80-year-old mother, Patricia.
"He was a loving son of his mother and his wife, and great father to his kids," said Hunter. "It's tragic. How can you get up in the morning and go to work and have that happen? How do bad things like that happen to good people?"
Martin Bodrog, 54, lived on a quiet, tree-shaded cul-de-sac in Annandale, Va., where family and friends gathered Tuesday.
Jeff Prowse, a close friend of Bodrog and family spokesman, said Bodrog was a hardworking Navy veteran and graduate of the Naval Academy who cared deeply about his family, his friends and his country.
"A heart of gold, and one of the most humble, self-effacing guys," said Prowse, a burly ex-Marine who paused several times to fight back tears as he talked.
"This is just an absolute tragedy for so many reasons," Prowse said.
Prowse worked with Bodrog at the Pentagon on amphibious vessel programs. He said Bodrog was transferred from the Pentagon to the Navy Yard in January.
Bodrog had been married for 25 years to Melanie, whom he met while she was serving on active duty as a Navy nurse. The couple had three daughters, ages 23, 17 and 16.
Prowse and Bodrog shared a love of the Boston Bruins hockey team and he last spoke to his good friend about a week ago.
"We were actually getting ready to figure out our Bruins schedule for the year," said Prowse, who retired from the military and now lives in southwest Virginia.
Bodrog was active in his church, where he started a Bible study and helped lead preschool and youth programs, Prowse said. In the winter, Bodrog could be seen in shorts and his Boston Bruins jersey, shoveling the driveways of elderly neighbors.
"The one thing that always stuck out to me about Marty ... was how absolutely driven he was to make sure that the equipment we were giving our Marines and sailors was absolutely the best he could be," Prowse said. "It was not a job for Marty, it was an absolute calling."
Arthur Daniels Sr., 51, of Washington, was a handyman working for a furniture contractor who just happened to be moving and installing furniture at the Navy Yard on Monday when the shooting began. He was the father of five children and the grandfather of nine.
On Wednesday, his family was still grieving and looking for answers.
Daniels' daughter, Iadora, received a long, wordless embrace from cousin Lisa Langley outside the family's apartment in Southeast Washington.
Iadora Daniels recalled how the family waited Monday to hear whether Arthur was safe.
"We called to the hospital and they said he wasn't there. We waited and waited, and then the FBI and the police came and told us they're sorry, my father didn't make it," she said.
Arthur Daniels worked remodeling offices, his daughter said. In his spare time, he liked to tinker with his cars, a white Crown Victoria and a green Saab.
"He was a good dad," Iadora said, adding that her father also liked to cook.
"Steak," she said, before breaking down in tears.
Langley said the family was still looking for information about the shooting.
"I would like to know all the details about what exactly happened to him," she said.
Daniels and his wife, Priscilla, were high school sweethearts, and all four of their sons were named after Arthur Daniels.
His death comes four years after the death of their 14-year-old son Arthur A. Daniels, who was shot and killed on a Washington street.
"My husband was the man I loved through all the tragedy," Priscilla Daniels told The Washington Post. "I can't believe this is happening again."
Sylvia Frasier, 53, of Waldorf, Md., had worked at Naval Sea Systems Command as an information assurance manager since 2000, according to a LinkedIn profile in her name.
Frasier studied at Strayer University, earning a bachelor of science in computer information systems in 2000 and a master's in information systems in 2002. Her duties at NAVSEA included providing policy and guidance on network security, and assuring that all computer systems operated by the headquarters met Department of Navy and Department of Defense requirements.
She also led efforts "to establish and implement procedures to investigate security violations or incidents," according to the profile.
Her brother, James Frasier, declined comment Monday night.
Kathleen Gaarde, 63, of Woodbridge, Va., was a financial analyst who supported the organization responsible for the shipyards, her husband, Douglass, wrote in an email to the AP Tuesday.
Douglass Gaarde declined to speak, but wrote that he was unable to sleep.
"Today my life partner of 42 years (38 of them married) was taken from me, my grown son and daughter, and friends," he wrote Monday. "We were just starting to plan our retirement activities and now none of that matters. It hasn't fully sunk in yet but I know I already dearly miss her."
Madelyn Gaarde, of Grand Junction, Colo., who's married to Douglass Gaarde's brother, said Douglass and Kathleen Gaarde met while he was studying electrical engineering at the University of South Florida in Tampa. Kathleen Gaarde, a Chicago native, was a graduate of Florida State University, her husband said in an email.
Douglass Gaarde, an Illinois native, also worked for the Navy until his retirement last year, his sister-in-law said.
"She was a very gracious person and very welcoming," Madelyn Gaarde said of Kathleen Gaarde.
In a follow-up email Tuesday, Douglass Gaarde said his wife was a loving daughter who cared for her 94-year-old mother until her death last year.
"She loved her animals and was a blue bird counter for the local refuge," he wrote. "She also loved hockey and the Washington Capitals and has been a season ticket holder for over 25 years."
He asked that donations be made in her name to the Virginia branch of the Humane Society.
Logistics analyst John Roger Johnson, 73, was perhaps most notorious for his bear hugs, his daughter said.
"Rib-crunchers," Megan Johnson said with a laugh as she remembered her father Tuesday. "You didn't have to pay for a chiropractor."
The Derwood, Md., man — the oldest of the victims in Monday's shootings — graduated from Pacific Lutheran University in Tacoma, Wash. He studied mathematics, but he went into the field of reliability engineering, said Megan Johnson, third-youngest of his four daughters.
Most recently, Johnson worked with TWD & Associates, Inc., where co-workers knew him as "J.J."
"These were dedicated employees who cared about their work and their colleagues," TWD president Larry Besterman said Tuesday. "The senseless violence that claimed their lives cannot erase the memory of their friendship and contributions."
Johnson was an avid saltwater fisherman but, his daughter said, "could not cook to save his life." He had a place across the road from the ocean at Nags Head on the Outer Banks of North Carolina for more than 20 years.
Megan Johnson said her father was a "die-hard" Washington Redskins football fan. And while the former youth ice hockey player used to feel the same way about the Baltimore Orioles, she said, "I can tell you, he was switching to the Nats," referring to the Washington Nationals baseball franchise.
Colleagues have said Johnson would always greet them with a hearty, "Good morning, Buddy. How you doing?" His daughter said that made her smile.
"I think the key thing there was his jolly, happy-go-lucky self," she said. "An honestly great guy."
Johnson would have celebrated his 74th birthday on Oct. 7. He also leaves his wife of more than eight years, Judy, and four stepchildren.
Frank Kohler, 50, was a past president of the Rotary Club in Lexington Park, Md. As such, he proudly held the title of "King Oyster" at the annual festival celebrating the region's signature bivalve the third weekend of each October.
"He walks around with a crown and robe and gives out candy," said Bob Allen, Kohler's former boss at Lockheed Martin in southern Maryland. "In fact, he was in charge of the beer stand. I used to have that job and when I left, I handed it off to him."