SPENCER L. PLEHATY, a senior systems engineer with Norden, a division of United Aircraft Corp., and a consultant, died Aug. 4, 2017. He was 92. A member of Delta Kappa Epsilon, he served in the U.S. Navy during World War II, after which he joined the Naval Reserve and retired as a Lieutenant Commander in 1970. He was an applied physicist with the U.S. Naval Ordnance Lab and then joined Norden. He was active in the Darien, Conn., town meeting for many years. His brother, Carl W. Plehaty Jr. ’41, predeceased him. A nephew, a sister-in-law, and several cousins survive.