My heart goes out to the friends and family of the fallen. Rest in peace.
I have not heard what company they worked for but it has been reported that they were located at the West Zone Police Training Center in Herat province. –Matt
Edit: 07/25/2012– DHS made a statement about these deaths and listed the names.
Statement By Secretary Napolitano On Afghanistan Shooting
Release Date: July 24, 2012
For Immediate Release
DHS Press Office
Contact: 202-282-8010
“It is with great sadness that I learned this weekend of the fatal shooting of three contractors stationed at the Herat Training Center in Herat, Afghanistan. Our thoughts and prayers are with the families of former U.S. Border Patrol Agent and retired ICE Agent Benjamin Monsivais, retired CBP Port Director Joseph Perez, and retired Her Majesty’s United Kingdom Revenue and Customs Officer David Chamberlain.
All three individuals were supporting Afghan Border Police training efforts when they came under attack. Their tragic deaths remind us of the dangers facing our men and women overseas, and the many sacrifices they make on our behalf every day.
Two other individuals were wounded in this senseless attack. We pray for the swift recovery and continued safety of former Border Patrol Agent Dana Hampton and language assistant Aimal Formully. We also applaud the tremendous bravery and heroism of the CBP Border Patrol Agent who responded to the attack and prevented the gunman from causing further harm and injury to others.”
Afghan in uniform kills three NATO contractors
July 23, 2012
Three foreign civilian contractors working for NATO as trainers were killed Sunday when a man in an Afghan security force uniform turned his weapon against them, NATO and Afghan officials said.
The shooter was killed in the incident in the west of the country, the International Security Assistance Force said in a statement, without giving further details or naming the nationalities of the victims.
An Afghan official who requested anonymity said he knew two Americans had been killed in the attack and they had been shot by an Afghan man in a police uniform in a military training centre near the Herat airport.
The number of so-called green-on-blue attacks — in which Afghan forces turn their weapons against their Western allies — has escalated this year.