Mathew James "Mat" Armstrong, 55, of Hollywood, Md. died on December 20, 2015 at MedStar Georgetown University Hospital in Washington D.C. He was born on September 2, 1960 in Jersey City, NJ to Francis Armstrong and Nancy Flaherty Armstrong of Leesburg, FL.

Mat graduated from Toms River South High School and earned his Bachelor of Science degree from Appalachian State University. On November 17, 1990, he married his beloved wife, Lori Picaroni Armstrong, in Lakehurst, NJ. Together they celebrated over 25 wonderful years of marriage.

He was employed over 28 years as a dedicated Comptroller for NAWC-AD Patuxent River. He was an avid fan of the New York Mets and the Dallas Cowboys. He was an active member of St. John Francis Regis Catholic Church, and head of the finance committee. His greatest love was spending time with his family and friends. He especially enjoyed family trips to Williamsburg, Va., fine dining and historical excursions.

In addition to his wife, Mat is survived by his daughters, Kelly Armstrong and Kimberly Armstrong, both of Hollywood, MD; his siblings, Debbie VanNess (Ken) of Bayville, NJ, Patricia Kilfeather (Kevin) of Toms Rivers, NJ, and Frank Armstrong III (Wendy) of Sanford, FL, and many extended family and friends.

A Mass of Christian Burial will be celebrated by Reverend Raymond Schmidt on Wednesday, December 30, 2015 at 1:00 p.m. at St. John Francis Regis Catholic Church, 43927 St. John's Road, Hollywood, MD 20636. Another Memorial Service will be held at NAWC-AD Patuxent River at a later date. Interment will be private.

Memorial contributions may be made to St. John Francis Regis Catholic Church, 43927 St. John's Road, Hollywood, MD 20636 or Greenwell Foundation, Therapeutic Riding Program, Post Office Box 198, Hollywood, MD 20636. Arrangements by the Brinsfield Funeral Home, P.A., Leonardtown, Md.