CBRN-CADS EP.02 — Danger Close: When CAS Almost Killed Its Own

▶ CBRN-CADS Simulation V6
— Episode 02 Interactive Tactical Simulation

CBRN-CADS · EPISODE 2 OF 10

2

Danger Close

When CAS Almost Killed Its Own

👤 1st Lt. Len Lomell
📅 1944
📍 Pointe du Hoc, Normandy
🌡 14°C
🌬 4.5 m/s W
⏱ ~12 min read

1st Lt. Len Lomell

U.S. Army Ranger, D-Day · World War II · Normandy

STEP 1 · CONFRONTING CBRN SITUATIONS

Dawn, June 6, 1944 — Pointe du Hoc

The 30-meter cliffs of Pointe du Hoc rose vertically from the English Channel. At the top: six German 155mm guns capable of reaching both Utah and Omaha beaches — the two American landing zones. If those guns fired during the landings, thousands would die. 225 Rangers from the 2nd Ranger Battalion were ordered to scale the cliffs, reach the top, and destroy the guns. They carried rope ladders, grappling hooks, and the knowledge that naval and air bombardment would “soften” the clifftop defenses before they arrived. The bombardment was massive — USS Texas fired 600 14-inch shells at the cliffface. RAF bombers dropped 635 tons of ordnance. By the time the Rangers reached the base of the cliff at 07:08, the landscape above was cratered and smoking. But the Germans were still there. And worse — the friendly bombardment hadn’t stopped cleanly.

STEP 2 · CHARACTER ANALYSIS

1st Lt. Len Lomell

First Lieutenant Leonard “Len” Lomell was a platoon leader in D Company, 2nd Ranger Battalion. He was 24 years old, a law student from New Jersey who had volunteered for the Rangers after Pearl Harbor. Lomell was one of the first Rangers up the cliff. As he pulled himself over the edge, he found the gun emplacements empty — the Germans had moved the 155mm guns inland to protect them from the bombardment. Lomell and Sergeant Jack Kuhn located the guns 200 meters inland, unguarded, and destroyed them with thermite grenades — accomplishing the primary mission. But the larger lesson of Pointe du Hoc was not the guns. It was what happened during the climb.

STEP 3 · IPB: CONTEXTUAL INTEGRATION

IPB: The Cliff as a Kill Zone — From Both Sides

Defining the Battlefield: A vertical cliff with Rangers climbing exposed on the face. Above: German defenders. Below: the English Channel. The cliff face itself was the kill zone — and Rangers were exposed to fire from both the enemy above and friendly naval shells behind.

Environmental Impact: The naval bombardment cratered the clifftop but also loosened rock that fell on climbing Rangers. Shell fragments from USS Texas were still landing as Rangers climbed. The line between “preparatory bombardment” and “friendly fire” was measured in seconds and meters.

Critical Failure: No minimum safe distance (MSD) doctrine existed for coordinating naval fire with cliff-assault operations. The bombardment schedule was time-based, not event-based — shells kept falling regardless of whether Rangers had reached the danger zone.

STEP 4 · ★ CBRN RESOLUTION INTELLIGENCE

★ When Your Own Support Becomes Your Enemy

The shells that were supposed to save the Rangers were killing them.

As Rangers climbed the cliff face, naval shells from USS Texas continued to impact the clifftop — fragments and debris raining down on the climbers. Several Rangers were wounded or killed not by German fire but by their own navy’s bombardment. The radio call “CHECK FIRE” — stop shooting — took critical minutes to reach the ship, and even after receiving it, shells already in flight continued to impact.

This is the origin of the “Danger Close” concept: when friendly forces are so close to the target that supporting fires risk hitting them. Post-Normandy analysis established Minimum Safe Distances for different weapon types, creating the framework that every modern CAS mission uses.

Resourcefulness Quotient: 85/100 — The Rangers’ only “resource” against friendly fire was a radio and the word “STOP.” Against 14-inch naval shells already airborne, even that was insufficient.

RQ 85/100 · HIGH

STEP 5 · DECISION-MAKING

The Decision Gap Between Fire and Cease Fire

The decision architecture failure at Pointe du Hoc reveals the fundamental “Danger Close” problem: the time between “fire” and “cease fire” is not zero. Naval shells have flight time. Bombs have fall time. In that window, friendly forces can move into the danger zone — or be there already. Modern CAS doctrine solves this with MSD tables, real-time position tracking, and FAC authority to abort. But in 1944, none of these existed. The Rangers climbed into their own bombardment because no one had defined the boundary between “support zone” and “kill zone.”

STEP 6 · SITUATION RESOLUTION

The Danger Close concept born at Pointe du Hoc became a cornerstone of CAS doctrine. Today, MSD for 500-pound bombs is 200m; for 2000-pound bombs, 500m. Pilots must receive explicit “cleared hot” from the FAC before releasing ordnance within Danger Close range, accepting higher risk for tactical necessity.

Lomell received the Distinguished Service Cross for destroying the German guns. But the deeper legacy of Pointe du Hoc is the doctrine it created: never again would friendly bombardment be delivered without a formal boundary between the support zone and the forces it was supposed to support.

D

DETECT

▸

M

MAP

▸

D

DECON

▸

A

ASSESS

▸

V

VERIFY

STEP 7 · CBRN-CADS SIMULATION SCENARIO

🎯

CBRN-CADS Geofencing & Danger Close Simulator

INTERACTIVE

CBRN 제독 작전의 ‘Danger Close’ — 고온 블리드에어가 풍하의 아군에게 향할 때. Geofencing 경계선과 풍하 안전 인터록이 어떻게 작동하는지 시뮬레이션합니다.

CAS ORIGINAL	CBRN-CADS	SELECT VARIABLE
Safe Distance	Geofence Radius	100m200m500m1000m
Wind Check	Downwind Interlock	Friendlies upwind ✅Friendlies crosswind ⚠️Friendlies downwind ❌
Weapon Type	Decon Mode Heat	Mode A: Ambient (safe)Mode B: 200°C (caution)Mode D: 400°C (danger close)

▶ AI RECOMMENDATION

MODEINTERLOCK: CLEARED — Geofence OK + Wind OK

CONFIDENCEHIGH

DURATIONContinuous monitoring

PARAMETERS200°C within fence

ASSETSAuto-abort if friendlies enter zone

UAM KOREA TECH · TACTICAL PROMPT ENGINEER

CBRN-CADS: Close Air Decontamination Support

9 Patents · 66+ Claims · Sole Inventor · Built in Korea 🇰🇷

CBRN-CADS SYSTEM →
ALL EPISODES →

UNCLASSIFIED · FOR EDUCATIONAL PURPOSES ONLY
© 2026 CBRN Tactical (cbrntactical.com) — UAM KoreaTech. All rights reserved.

◀ EP.01 📋 All Episodes EP.03 ▶

Related Episodes
→ CBRN-CADS EP.01 — The Voice in the Sky: 9 Lines That Save Li
→ CBRN-CADS EP.03 — The Drone That Replaced the Pilot: MUM-T O
→ CBRN-CADS EP.04 — 90 Seconds to Live: The CBRN Time Paradox

About UAMKOREATECH (유에이엠코리아텍) ·
Company Overview

Park Moojin

CEO, UAM KoreaTech | Tactical Prompt Engineer Military History & Psychology

Architect of CBRN-CADS — an unmanned aerial decontamination system combining high-temperature dry decontamination with autonomous flight. First-author inventor of 21 intellectual property assets (domestic patents, international PCT filings, technology transfers, and trademarks) in airborne gas sterilization and CBRN decontamination. Bridging defense technology and AI to create decision tools that save lives in contaminated environments.