The U.S. Army awarded Day & Zimmermann Hawthorne Corp. a $2,301,227,487 firm-fixed-price contract on June 9, 2026, to operate, maintain, and modernize Hawthorne Army Depot in western Nevada — the largest ammunition storage depot in the U.S. military. The contract runs through December 29, 2046, locking in a single operator for nearly two decades of critical munitions management at the hub that anchors the Pentagon's conventional ammunition supply chain.
Army Contracting Command at Rock Island Arsenal, Illinois, assigned contract number W519TC-26-D-A018 and conducted a competitive solicitation that drew four bids. The solicitation was initially released in October 2025. Day & Zimmermann Hawthorne Corp., a subsidiary of Philadelphia-based Day & Zimmermann, was selected as the winning offeror. Specific work locations and funding are determined through individual task orders issued over the life of the contract.
What the Contract Covers
The scope of work encompasses the full operational footprint of Hawthorne Army Depot, organized across 14 separate performance work statements. According to contract documentation and analysis by GovCon Wire, those statements address:
- Ammunition demilitarization of specified munitions families — disposing of obsolete or excess conventional munitions that have reached end-of-life
- Supply depot operations supporting the Joint Munitions Command, the Army command responsible for lifecycle management of conventional ammunition
- Safety and occupational health programs across the depot's extensive storage and handling areas
- Security services protecting one of the most sensitive logistics installations in the continental United States
- Fire and emergency services tailored to the unique hazards of an active ammunition depot
- Environmental management covering remediation, compliance, and ongoing stewardship of the Nevada high-desert site
- Government property administration tracking and managing the Army's physical assets on-site
- Information technology support sustaining the depot's operational and logistics systems
The breadth of the performance work statements reflects the complexity of operating a facility of Hawthorne's scale. Each of the 14 statements represents a distinct functional domain that must operate simultaneously and in coordination across what Defensehere describes as one of the country's most important ammunition storage and logistics facilities.
Strategic Context: Rebuilding Depleted Stockpiles
Hawthorne Army Depot serves as the U.S. military's primary hub for conventional ammunition storage, maintenance, and obsolete munitions disposal, according to Defensehere. The depot's role has grown more visible since 2022, as the United States drew down domestic stockpiles to support security assistance to Ukraine and other partner nations. That drawdown accelerated Pentagon planning for long-term depot contracts that can sustain operations through a rebuild cycle expected to span decades.
The contract's duration through 2046 reflects the Army's strategic calculus: maintaining continuity of depot management reduces transition risk at a facility where operational missteps carry literal explosive consequences. Rather than cycling through shorter base-plus-option contracts, the Army structured this award as a long-horizon commitment, allowing the contractor to plan capital investments in modernization and workforce development against a stable revenue baseline.
Joint Munitions Command, which operates Hawthorne, is responsible for the full lifecycle of conventional ammunition — from procurement and storage through demilitarization of expired or excess munitions. The depot's role in that lifecycle is irreplaceable: no other single facility in the U.S. military inventory matches its storage capacity or its geographic isolation from population centers, a key safety requirement for high-hazard munitions storage.
Day & Zimmermann's Track Record with the Army
Day & Zimmermann is not a new entrant in Army munitions work. The Philadelphia-based firm has managed depot operations at Hawthorne under previous contracts, making this award a continuation and expansion of a long-standing operating relationship with the Army at this facility. That institutional experience at the site — its systems, workforce, environmental obligations, and security requirements — represents a significant incumbent advantage that no competitor could fully replicate from a standing start.
The firm operates across government services, engineering, construction, and munitions — a combination that positions it well for the integrated demands of depot management, where maintenance engineering, environmental compliance, and supply chain operations must function in concert. Day & Zimmermann Hawthorne Corp. is structured as a dedicated subsidiary for the depot mission, consistent with how large government contractors typically ring-fence performance risk on single-site, long-duration contracts.
What It Means for Contractors
The Hawthorne award signals continued Army investment in long-term depot privatization models, and it creates a defined set of opportunities for companies positioned to work in Day & Zimmermann's supply chain over the next 20 years.
Subcontracting pipeline: A contract of this size and duration across 14 performance work statements will require extensive subcontracting. Firms with capabilities in hazardous materials handling, environmental remediation, physical security systems, industrial fire suppression, and government IT infrastructure should expect solicitations from the prime contractor as task orders are issued. Small businesses with relevant NAICS codes in the Nevada market and existing facility clearances will be natural teaming targets.
Task order cadence: Because funding flows through individual task orders rather than a single funded ceiling, contractors in the Day & Zimmermann supply chain can expect a rolling pipeline of discrete scoped awards over the contract's life. Monitoring Army Contracting Command at Rock Island for task order activity under contract W519TC-26-D-A018 is advisable for any firm seeking to engage the program.
Workforce implications: Depot operations contracts of this duration typically require significant on-site workforce commitments. Staffing firms and professional employer organizations serving the Nevada defense corridor — particularly those with experience hiring for high-hazard industrial environments — will see demand across the contract term for cleared and trained workers in explosives safety, logistics, and environmental compliance roles.
Competing primes should watch the model: The Army's willingness to structure a long-duration firm-fixed-price award for depot operations suggests the service may apply similar structures to other major depot privatization actions as munitions stockpile rebuilding drives increased activity at Army installations. Companies that lost bids on this solicitation should assess whether protest grounds exist within the statutory windows and prepare for potential follow-on competitions at comparable facilities.
For defense contractors operating in the ammunition and depot management space, this award establishes Day & Zimmermann as the dominant player at Hawthorne through 2046 — a market position that will define subcontracting relationships, workforce flows, and competitive dynamics in the western Nevada defense industrial base for a generation.
