
The Military Compact Descender® (MCD®)
A compact, self-contained personal descent device built for environments where failure is not an option.
One hand on the device. The other on the mission.
Self-contained. Deploys in seconds. 50,000+ kits in service across 35+ countries.
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System Overview
- Kits can be customized to content, rope length (up to 690 ft), and packaging
- Dual braking system, including both an active and passive brake
- Technora® rope engineered for strength retention in chemical exposures
- High-heat aramid fiber rope with a tensile strength exceeding 6,700 lbs (3,045 kg)
- Rope decomposition temperature: 500°C (932°F)
- ANSI minimum temperature rating: -40°C

Personal Evacuation & Assisted Rescue
The MCD supports both personal evacuation and assisted rescue—extending the system from a personal escape device to a versatile on-site rescue solution.
This capability enables personnel to:
- Transition from personal evacuation to assisted rescue
- Maintain control while lowering a casualty
- Deploy quickly in environments where immediate descent is required

Third-Party Certifications
- Certified by TÜV SÜD to CE EN 341:2011/2D
- Certified by UL to ANSI/ASSP Z359.9-2021
- Available in NFPA-compliant configurations for emergency escape and rescue applications
Performance Specifications
MCD-G
- ANSI load rating: 130 lbs – 310 lbs to 180 meters
- EN load rating: 60 kg – 125 kg to 180 meters
MCD-G+
- ANSI load rating: 130 lbs – 310 lbs to 210 meters
- EN load rating: 60 kg – 125 kg to 210 meters
- EN load rating: 60 kg – 141 kg to 130 meters
Operational Applications
Paratroopers and ground forces operating in complex terrain face scenarios where waiting for external rescue is not an option. The MCD was originally designed to solve exactly that problem — a soldier stranded at height, alone, who needs to get down and stay in the fight. Its hands-free braking system allows the operator to stop mid-descent, engage a threat, and continue — one hand always available for the mission. In urban combat environments, the same device that gets a soldier out of a compromised structure can lower a civilian who cannot self-rescue. Compact enough to carry on the body, the MCD deploys without external systems or additional personnel.
Special operations personnel operate in environments — urban, mountainous, vertical — where descent capability has to travel with the operator and work the first time, every time. The MCD's self-contained design requires no rigging infrastructure and no support team. Its high-heat Technora® rope maintains integrity in chemical exposures and extreme thermal environments. The hands-free braking system allows operators to pause descent, assess, and act — without releasing the device. Whether executing a planned infiltration or an unplanned extraction, the MCD provides a reliable, one-hand-controlled descent and the ability to lower a casualty when the mission requires it.
SWAT and tactical law enforcement personnel regularly operate on and around elevated structures — buildings, bridges, parking structures — where rapid descent or emergency egress may be required with no advance rigging in place. The MCD deploys from both static and moving structures, enabling controlled descent with one hand while the other remains free for a weapon or critical equipment. When a situation requires lowering an incapacitated officer or civilian, the same device transitions to assisted rescue without additional hardware. Lightweight and compact, it carries on the body and is ready when the situation demands it.
Private security personnel operating in hotels, high-rises, and urban infrastructure face a scenario most hope never to encounter — a compromised structure, no functional exits, and no external rescue response within reach. The MCD provides a self-contained personal descent solution that can be carried on the body and deployed in seconds, without reliance on building systems or outside personnel. Its hands-free braking system allows the operator to stop, assess, and act mid-descent. High-heat Technora® rope maintains performance in fire-adjacent environments. And when a principal or civilian cannot self-evacuate, the MCD can lower a casualty under full operator control.
For military fire and ARFF applications, the MCD is also available in an NFPA-certified configuration. Explore the MCD Fire Escape System →




MCD® Fire Escape System
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The MCD® Fire Escape System
The MCD® (Military Compact Descender®) Fire Escape System is a compact, NFPA-compliant emergency escape device designed for military and tactical personnel operating at height. Weighing approximately 2.5 pounds, it enables rapid, controlled self-evacuation and supports assisted rescue operations from elevated structures, vessels, and other operational environments.

SPARK (Small Packaged Assisted Rescue Kit)
The SPARK provides a compact assisted-recovery capability for personnel operating in elevated, vertical, and restricted-access environments. The kit includes a pre-assembled 4:1 mechanical advantage system, casualty attachment strap, anchor materials, and hardware, delivering a versatile solution for rapid extraction and casualty movement.

Rooted in the mission of saving lives.
Inspired by the tragic events of September 11, 2001, Diane Waghorne felt a profound calling to develop safer ways for people to evacuate from perilous situations. Her research led her to a device designed for emergency descent in dangerous conditions. Recognizing its life-saving potential, Diane acquired the patent for the Military Compact Descender (MCD) and brought its manufacturing to North Texas.
Driven by her passion for incident prevention and her unwavering commitment to safety across all industries, Diane established Tech Safety Lines (TSL) as a trusted leader in rescue solutions.
Today, Tech Safety Lines operates from two training centers in the Dallas–Fort Worth area, with more than 50,000 rescue kits deployed in over 35 countries worldwide.

Women Owned Small Business
Since 2002, our female-led team has delivered innovative, life-saving technologies to industries worldwide, including aerospace, energy, and construction.

Custom Solutions
TSL provides a full range of consulting services—from safety assessments to custom product design—and is trusted by leading organizations such as Bell Helicopter, GE, and Duke Energy.

Certified
ISO 9001:2015 certified across multiple domains, including Rescue Training, Rescue System Design, Fall Protection Equipment, and Rescue Consulting Services.
