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OSI has a blast training with EOD

A military member squats in front of a prop bomb in front of a group of military members.

U.S. Air Force Staff Sgt. Tyrone Powell, 35th Civil Engineering Squadron Explosive Ordnance Disposal (EOD) journeyman, crouches behind a simulated improvised explosive device during Office of Special Investigations Detachment 623 crime scene processing training, at Misawa Air Base, Japan, July 8, 2021. This year, the special agents met with EOD to practice post-blast procedures. (U.S. Air Force photo by Airman 1st Class Joao Marcus Costa)

A military member holds a tablet with what looks like the home screen of the application. The device's purpose is to show an x-ray of a bomb.

U.S. Air Force Senior Airman Porter Thornton, 35th Civil Engineering Squadron Explosive Ordnance Disposal (EOD) administration technical orders journeyman, shows an x-ray of the contents of a simulated improvised explosive device (IED) to special agents and investigators, at Misawa Air Base, Japan, July 8, 2021. The device allows EOD members to see what’s inside the IED, allowing them to know what to destroy so the ordnance won’t detonate. (U.S. Air Force photo by Airman 1st Class Joao Marcus Costa)

Military members stand around a prop bomb made of cardboard that's bee shot with an anti-bomb device.

Special Agent Kaprice Montecalvo, Office of Special Investigation (OSI) Investigations, Collections, and Operations Nexus Center Detachment 1 forensic science consultant, left, talks to the Explosive Ordnance Disposal (EOD) team after a disrupting a simulated improvised explosive device, at Misawa Air Base, Japan, July 8, 2021. The OSI detachment on base has an annual training on photography and crime scene processing. This year, they chose to practice post-blast aspects with EOD. (U.S. Air Force photo by Airman 1st Class Joao Marcus Costa)

Military members stand around a prop bomb made with an ammo can that's been shot with an anti-bomb device.

U.S. Air Force Staff Sgt. Tyrone Powell, 35th Civil Engineering Squadron Explosive Ordnance Disposal journeyman, shows the result of the Percussion Actuated Neutralizer (PAN) against a simulated improvised explosive device (IED) at Misawa Air Base, Japan, July 8, 2021. The PAN shot a clay projectile into the ammo can to disrupt what makes the IED detonate. (U.S. Air Force photo by Airman 1st Class Joao Marcus Costa)

A military member points to a hole in the floor due to a controlled C-4 explosion.

U.S. Air Force Master Sgt. David Dickie, 35th Civil Engineer Squadron Explosive Ordnance Disposal (EOD) logistics section chief shows the result of a C-4 explosion at Misawa Air Base, Japan, July 8, 2021. The EOD team used a quarter of a block of C-4 to simulate post-blast scenario for the Office of Special Investigations to collect evidence from. (U.S. Air Force photo by Airman 1st Class Joao Marcus Costa)

A military member squats in front of other military members in a roofless concrete box

U.S. Air Force Staff Sgt. Tyrone Powell, 35th Civil Engineering Squadron Explosive Ordnance Disposal journeyman, recaps post-blast training with Office of Special Investigations special agents and Security Forces investigators at Misawa Air Base, Japan, July 8, 2021. The purpose of this training was to prepare for real-world explosive ordnance scenarios to preserve as much evidence as possible. (U.S. Air Force photo by Airman 1st Class Joao Marcus Costa)

MISAWA AIR BASE, Japan --

The Office of Special Investigations (OSI) Detachment 623 and the 35th Security Forces Squadron (SFS) teamed up with 35th Civil Engineering Squadron (CES) Explosive Ordnance Disposal (EOD) to simulate an investigation of an explosive ordnance at Misawa Air Base, Japan, July 8, 2021. 

The training consisted of three scenarios led by U.S. Air Force Staff Sgt. Tyrone Powell, 35th CES EOD journeyman. 
During the immediate action scenario, the EOD team blasts water on a dummy improvised explosive device (IED) to detonate it rendering the scene safe. Afterwards, OSI and SFS members can enter the scene to document any evidence that was left behind. 

For the precision shot scenario, EOD shot a clay projectile precisely targeting the triggering mechanism of the ordnance to reduce the chance of detonation. 

As part of the post-blast scenario EOD detonated a C-4 explosive so the investigators could practice gathering evidence in the aftermath of an explosion. 

“We don't expect that this type of event would happen on this base,” said Special Agent Kaprice Montecalvo, OSI Investigations Collections and Operating Nexus (ICON) Center Det 1 forensic science consultant, Yokota Air Base, Japan. “This is knowledge that OSI and SFS members are going to carry with them when they go to a new base or when they deploy. So, when it does occur, they're more familiar with the types of capabilities EOD and the Air Force has, and who they might reach out to assist in their investigation. It also shows us how we fit in that puzzle of how to respond and what we bring to the fight.” 

OSI investigates federal crimes related to the Air Force. Detachment 623 members conducted annual training on photography and crime scene processing with an OSI forensic scientist from Yokota Air Base, Japan. The team practiced post-blast procedures this year.

The 35th CES EOD flight’s mission is to clear hazards by locating, identifying and neutralizing explosive ordnances in order for base operations to continue, especially during wartime. Because OSI needs evidence from both the scene and ordnance to find the perpetrator, working with EOD ensures each team can deconflict while still completing their respective missions. 

“It's beneficial to both agencies to see what our capabilities are because if we don't get that kind of training when something actually happens, then we're not really going to know what to do,” said Powell. “We don't want to show up on scene and contaminate the evidence, and then all of a sudden, that person can't get prosecuted because something was messed up, so it really does help to do this beforehand.”