# Long Wall

> Long Wall is a Long Beach, California defense manufacturer building cost-effective, mass-producible missile defense systems. Founded in 2017 as the rocket startup ABL Space Systems, it rebranded to Long Wall in February 2025 and pivoted from commercial satellite launch to defense, repurposing years of launch-vehicle engineering into interceptors, target rockets, and deployable ground infrastructure. Its lineup includes Cyclops, a surface-launched exoatmospheric interceptor; RSX, a low-cost liquid booster for flight testing and threat replication; and Ironwood, rapidly deployable ground support equipment. The company's thesis is that modern threats - hypersonic weapons, growing nuclear arsenals, and raid sizes in the hundreds - have outrun the price and production volume of legacy interceptors, so defense needs magazine depth measured in thousands, not dozens.

- **Founded:** 2017
- **Headquarters:** Long Beach, California, United States
- **Founders:** Dan Piemont (Co-Founder & CEO), Harry O'Hanley (Co-Founder & Chairman/President)
- **Team size:** ~49 employees (2025); ~100 at peak as ABL Space Systems
- **Products:** Cyclops, RSX, Ironwood
- **Notable:** Rebranded from ABL Space Systems to Long Wall in February 2025, completing a full pivot from commercial launch to missile defense., Reached an estimated $2.4B valuation and raised $500M+ as ABL Space Systems., Secured a ~$60M U.S. Space Force responsive-launch contract in March 2023.

## Products & services

- **Cyclops** — A surface-launched, exoatmospheric interceptor designed to defeat ballistic missiles in the midcourse phase of flight via hit-to-kill kinetic impact. Built for mass production and low unit cost to provide magazine depth for homeland and regional missile defense.
- **RSX** — An affordable liquid-fueled booster vehicle for flight testing and threat replication, making hypersonic and interceptor test flights cheap, highly available and routine. Draws on the company's RS1 launch-vehicle heritage.
- **Ironwood** — A rapidly deployable, modern ground support equipment system - command and control, power, and communications infrastructure - for launching and operating defensive systems anywhere in the world.

## Achievements

- Rebranded from ABL Space Systems to Long Wall in February 2025, completing a full pivot from commercial launch to missile defense.
- Reached an estimated $2.4B valuation and raised $500M+ as ABL Space Systems.
- Secured a ~$60M U.S. Space Force responsive-launch contract in March 2023.
- Announced Cyclops, a mass-producible exoatmospheric interceptor, along with RSX boosters and Ironwood ground support equipment.
- Operates 160,000+ sq ft of manufacturing capable of producing 100+ interceptor rounds per year, with a stated goal of scaling to thousands.

## Latest updates

- **2025-02** — ABL Space Systems officially rebrands to Long Wall (announced Feb 19, 2025), pivoting from commercial launch to missile defense.
- **2025-11** — Reported Seed-stage raise dated November 2025 tied to the relaunched, defense-focused company.
- **2025-01** — Announced Cyclops, a surface-launched exoatmospheric interceptor, alongside RSX boosters and Ironwood ground support equipment.

## Links

- Website: https://www.lwall.com/
- LinkedIn: https://www.linkedin.com/company/long-wall/
- Twitter/X: https://x.com/longwalldefense

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Profile page: https://yespress.io/long-wall
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Last updated: 2026-08-04