BREMERTON, Wash. (AP) _ Tragedy visited Kay and John Glynn twice in three weeks - once from the desert battlefield of Saudi Arabia and once from the counter of a local supermarket.

The Glynns' 19-year-old son-in-law, Michael Linderman Jr., died Jan. 29 when the armored vehicle he was riding on was struck by friendly fire during a skirmish with Iraqi soldiers.

Then Stanley McWhorter of Lacey, the Glynns' good friend and best man at Linderman's wedding to their daughter, Christina, died Feb. 18. His death was linked to a capsule of cyanide-laced cold medication.

''We've had so much grief and heartache this past month, it's unbelievable,'' Mrs. Glynn said. ''I just want to go out and scream sometimes.''

The couple learned of their son-in-law's death when their 18-year-old daughter called them from Twentynine Palms, Calif., where Linderman had been stationed. Linderman ''wanted to be the best. He wanted to be a Marine,'' Mrs. Glynn said.

Then, just a week after the Glynns saw McWhorter, 44, at their son-in-law's funeral in Roseburg, Ore., they learned they had lost their good friend, too.

''Stanley was like a brother to me,'' Mrs. Glynn said.

''He was the kind of person who everybody wants to be his friend,'' Glynn added.

The Glynns initially were puzzled by the death of their friend, who had gone into convulsions in his kitchen and lost consciousness before dying at a hospital later that day. The cause of death later was confirmed to be cyanide from a tainted Sudafed 12 Hour cold capsule.