Michael Chiapperini and Tomasz Kaczowka were killed when gunman William Spengler set his Webster, N.Y., house on fire and shot at the responding crew of firefighters. Spengler then killed himself in the ambush.
The blood drive will be from 1 p.m. to 6 p.m. on Jan. 25 at the Bethesda-Chevy Chase Rescue Squad (5020 Battery Lane) in the Anastasi Room.
Those who wish to give blood are asked to register at online at redcrossblood.org and search by sponsor code #05314957.
For more information, visit the event’s Facebook page.