___1. Identify components by visual or x-ray inspection.
___a. Batteries: size ____ Quantity _____ resistance____
size ____ Quantity _____ resistance____
___b. Capacitors: Quantity ____ resistance____
___c. Blasting Caps: Quantity ___ resistance____
___d. Switches (foil, photo, relay, etc) resistance____
___e. Wire or other _____________________ resistance____
___f. Hidden components _________________ resistance____
___g. Main Charge identified ___________________________
___2. Draw circuit and label Volts and Resistance:
___3. Component Voltage and Resistance norms:
a. Capacitor, 0 ohms
b. 12 Sealed Lead Acid, 12 volts, 0.2 ohms c. 9 V Alkaline, 9 volts, 1 ohm
d. 9 V Zinc Carbon, 9 volts, 18 ohms e. 6 V Dry cell, 6 volts, 1 ohm f. C cell, 1.5 volts, 0.3 ohms g. D cell, 1.5 volts, 0.25 ohms h. AA cell, 1.5 volts, 0.25 ohms
i. Blasting Cap, 2 ohms (M-6 Det temp 300C, No Fire .1 Amp, All Fire .5 Amp)
j. 18 Gauge Wire, 6-10 ohms per 1,000 feet
___4. Identify type of circuit: Series/Parallel (with equal legs)/Parallel (with unequal legs) .
89 90
89 90
__5. Compute circuit
Resistance
. (R)___a. For Series resistance: Rt (total) = R1 + R2 + R3…
Rt____ = R1___ + R2___ + R3___ + R4___ +R5___
___b. For Parallel circuit with each leg equal in resistance:
Rt = RL (resistance of one leg)/NL (number of legs)
Rt ___ = RL ___ / NL ___
___c. For Parallel circuit with each leg not equal in resistance:
Rt= ____1_____
1 + 1 + 1 R1 R2 R3
Rt___ = __________1_____________
1 + 1 + 1
R1 ___ R2 ___ R3 ___
___6. Compute circuit
Voltage
. (V)___a. If there is only one power source, that is your circuit voltage.
V = ____
___b. If there is multiple power sources in series, add the voltages together:
Vt = V1 + V2 (18 = 9 + 9)
Vt___ = V1 ___ + V2___
___c. If there is multiple power sources in parallel, use the voltage of one leg.
V = _____
___7. Compute
Current
(I or Amps). Volts V = I x R Amps I = V / R V ___ / R ___ = I ____ Ohms R = V / I___8. Compute Commit Time from enclosed chart.
a. Read across bottom of chart to circuit amps. Read up to the 5% line. Read left to find your commit time.
CT = __________
___9. Subtract Battery Kill Time (TB). Nominally 100 microseconds (.000100 for 6V lantern battery)
TB_________ = CT __________ - .000100 ___10. Add Switch Motor Time (TM).
Membrane Switch 1 to 10 microseconds .000001 Vibratory Switch 250 micro to 2 milliseconds .000250 SCR or Photocell 1 microsecond .000001 Electromechanical Relay 1 to 5 milliseconds .001000 M5 Mousetrap 5 to 7 milliseconds .005000 Mouse trap/Rat trap 10 to 20 milliseconds .010000 T ______ = TB ______ + TM _________
___9. Compute Distance of shot. The distance from the skin of the target to the actual component being shot. Measure to nearest inch. One inch equals .083 feet.
D = __________
__D__
___10. Compute required tool velocity. V x T Distance D=VxT Velocity V=D/T Time T=D/V V _____ = D ____ / T ____________
___11. Select Tool
91 92 Rb = resistance of bridgewire
E = I2xRbxTe
E = energy in joules
I2 = current individual initiator will see, squared
Rb = resistance of bridgewire
Te = time it takes to deliver
7. Marine Security Element (MSE) 8. EOD
Warning: This brief may have to be sanitized for host nation personnel/non read-in personnel (ie. code words omitted and some EOD tool sets omitted).
Good evening. I am (NAME)________ , the EOD team Leader. I have _________ other EOD Tech (s) _____(NAME)____, who will be located with _____, and I will be with _______. We will be responsible for responding to Booby Traps and Improvised Explosive Devices (IED’s) that impede the assault, Hostages with devices Attached and or Suicide Bombers.
The EOD threat assessment for this target is:
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
(basic booby traps, tripwires, suicide bombers, devices incorporating timers, command detonation (hard wire or radio controlled), and victim operated devices such as tilt, tremblers, anti lift, anti opening, photocells, collapsing circuits, and Intrusion Detection Systems using PIR, AIR, Microwave, Acoustic, Magnetic, Glass Break, Capacitance, etc.
WMD is / is not expected to be encountered on this target.
Special equipment we will be carrying is the Citadel, classified SECRET, a jamming device to defeat radio controlled IED’s incorporating pagers, cell phones or radio controlled airplane components. Prior to use Phoenix 1 will be notified. It can potentially jam Intra Team radio communications if one of the assaulters is in close proximity (10’) of the device, or you are talking to someone on the opposite side of the Military M-6 Cap 5% 50% 95%
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device. If loss of communications, move farther away from the device and or relay thru stacks, as on a ship, if required.
Other special equipment we will be carrying is(as applicable): Mini-MIRA, Ranger, GN-2b, GN-4, Six Pack or In Field Unit, HRM, Pager S, LHT, MK 7, APD 2000, Bio Sampling Kit, ADM-300 Multi Function Radiac, SFAI, UCP, Drager, SOF CAD, CB Extraction Tool, Video Probe, Thermal Imager, other:
________________________________________________________________________
__________________________________________________
________________________________________________________________________
__________________________________________________
________________________________________________________________________
__________________________________________________
Code word for an IED or booby-trap is BOSCO and for an immediate withdrawal from the target is Landslide. If a timer is seen and 5 minutes or less is remaining, call Landslide. Timers can be count down timer, Show actual time of day or hidden.
Ordnance Safety Precautions:
Timed Device - One man maintain visual on timer (may be a count down timer or a clock showing time of day) until EOD arrives. Once EOD arrives, we need 1/2 assaulters to provide security over watch, preferable from 10’ if possible and at the doorway.
Trip Wires - If you can safely navigate around, drop a red chem light & go around, if you can’t, drop a red chem light, post one man to avoid other assaulters from tripping the booby trap.
Hazards of Electromagnetic Radiation to Ordnance (HERO) - Don’t transmit radio’s within the following distances of IED’s:
MBTR/MX-300 8 Meters
Satcom 18 Meters HF (whip Ant) 153 Meters HF (Dipole) 488 Meters
White Light - Avoid using white light (battery powered light of any color) directly on an IED, especially at close range, even if you have used tac lights on your weapons while clearing the room. If it is necessary to recon the IED, do so wearing NVG’s, until EOD is on site.
Fragmentation/Blast Overpressure and Security - Leave two shooters to provide security, unless space is confined, then leave one shooter. Provide security from a standoff distance of 10’. If an IED looks the size of 5 lbs of C-4 (4 sticks), evacuate all others if possible to a distance of 30 ft and two solids walls back. If an IED looks the size of up to
40 lbs C-4 (two satchels of C-4), evacuate everyone else 60 ft and two solid walls back.
Alarm Systems: Manned Target - If outside of Primary Breach Point is protected move to Alternate Breach Point. If a system is immediately inside the Breach Point, the Breach should set it off. Stairwells & Breaking Corners or suspect rooms, bang prior to entering (similar to trenches/stairwells) & give a couple of seconds, then bang again and charge in.
The threat is the system will fire an improvised Claymore. A delay is desirable to give the system a chance to alarm and function the penalty (claymore). The second bang is to startle the bad guy, no delay and charge in. If it sounds an alarm, ignore it and charge in.
When and if required the siren can later be eliminated. Gig is up once the first breach goes, siren is only a nuisance at that point. Banging prior to entering should set off Passive Infrared (PIR) sensors, the most common type.
Alarm Systems: Unmanned Target/Suicide Manned Target/WMD Target - Consider using a Surreptitious Entry Technique/EOD up front (soft entry) as any violation of the system may set off the WMD or a very large conventional explosive IED (entrapment type device) that could eliminate the entire assault force. Ask yourself who is the target, what is the threat assessment, could it be the assault force.
Suicide Bomber - If the IED has 5 sticks of dynamite or 2 lbs of C-4, the PC and all assaulters need to be 10’ or more from the suicide bomber, and then shoot him, expecting a high order detonation. Inside 10’ your best bet is to use crisis management verbiage to calm him down and try to get him to (unknowingly) move 10’ from the PC and all assaulters, then shoot him expecting a high order detonation. If unsuccessful, try to gain positive control of his bomb trigger and maintain it until EOD arrives. For 10 sticks of dynamite or 4 lbs of C-4 use 15’ and for 20 sticks or 8 lbs use 18’.
We are prepared to deal with the above threats. That concludes my brief.
Subject to your questions, I will be followed by CCT, the Combat Control Team Sergeant.
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