5.0 Flashcards
What must the team members be ready to do once the team moves from the L.C.C.?
Execute compromise procedures / planned mission
Briefly describe the actions of Breachers and entry personnel: (A) on the target and (B) after the detonation of the charge.
A) Breachers place charge after a visual sweep of B/P confirming correct B/P and scanning for hazards. E/T provides security.
B) Breachers remove shocktube to prevent entanglement. E/T moves to B/P and determines if B/P is open or closed.
List four operational responsibilities of the breacher.
- Tactical Plan
- Charge to be used
- Misfire procedures.
- Equipment needed.
Give two examples why the explosive breachers must carry additional shock tube initiators and firing assemblies in an operation.
- Misfires
2. Firing point is more than 40 feet
Describe how rehearsals should be conducted and why this is important.
Rehearsals should be conducted completely with all charges, firing assemblies, and equipment to ensure all items deploy smoothly and team members understand all responsibilities and procedures.
Describe why the discipline of “Tactical Explosive Breaching” differs from all other applications of explosives.
The only discipline that permits people to be close to B/P. Depending on threat conditions, a degree of collateral damage and minor injuries may be acceptable.
Why do two independent breachers complete the calculation worksheet separately?
To ensure the calculations are accurate.
List three examples when the essential elements of information checklist should be reviewed and used prior to the start of the planning of an operation.
- Analyzing info
- Briefing under cover agents prior to deployment
- briefing sniper/observer teams.
Agencies misjudging their knowledge and capabilities that create unacceptable collateral damage or injuries could produce negative impact on other agencies’ breaching programs. (T or F)
True
Why is it NOT recommended to decrease the safe stacking distance closer than 4 psi distance value for external detonations even when a ballistic shield is utilized?
The physical surroundings could still produce reflective over-pressure, increasing the value of the PSI value and duration of the exposure. Also, the “Mach Stem” effect may be produced placing the E/T at additional risk of injury.
List examples of where “Over-pressure Wave Intersection Points” could occur inside a structure.
- Hallway detonation with charge placed around corner.
2. Adjoining rooms
Describe what an “Over-pressure Wave Intersection Point” is:
Known as “Mach Stem” effect. Occurs when two or more leading edges of reflective over-pressure waves meet and collide. Based on the number of these leading edges and magnitude of their strength, determines the strength of the increased psi value at the point of intersection.
Why isn’t the team safe stacking distance the same for internal detonations compared to external detonations?
Internal environments are 3 dimensional and Reflective Over-pressure occurs. The safe stacking distance @ 4psi is for external detonations only. That distance internally of a structure could place officers at a higher psi value and longer duration of exposure to the psi values.
Describe the various conditions that cause concern for the hazards of the shockwave at detonation:
The breachers must evaluate the crime scene’s stalking location of the E/T to ensure the shockwave does not create hazards to the team from roof and eves loosening and falling / windows breaking and falling on team. Additionally, the shockwave traveling through the objective wall could cause injury to deputies leaning on wall.
Why must the agency’s explosive breaching program require detonations on actual structures with occupants inside the objective room?
This system of documentation validates the actual conditions the charges will be tactically utilized under, and the occupants are witness to and validate the debris field pattern, velocity of debris as acceptable and the occupants receive no effects from O.P. from detonations.
