The United States Navy plans to field 31 next-generation E-130J TACAMO aircraft, officially designated as the Phoenix II, to replace its aging fleet of 16 E-6B Mercury planes. According to a Pentagon fiscal 2027 budget report, the capitalization program represents a major expansion of airborne nuclear command, control, and communications capabilities. Documents outlined by Aviation Week and The War Zone indicate that the program covers six development aircraft and 25 production models.
Capt. Roger Davis, program manager for Airborne Strategic Command, Control and Communications (PMA-271), confirmed that the TACAMO mission program is funded to procure 31 E-130J aircraft. Built by Lockheed Martin using the C-130J-30 Super Hercules airframe and integrated by Northrop Grumman, the Phoenix II will gradually replace Boeing 707-derived E-6B platforms that have operated for over three decades. The Naval Air Systems Command announced the Phoenix II name in August 2025 to evoke the history of the original TACAMO—meaning Take Charge And Move Out—mission flown on EC-130Q aircraft between 1963 and 1993.
Operational Shift and Fleet Expansion
The expansion from 16 to 31 aircraft stems from a division of responsibilities. Current E-6B jets split time between the TACAMO mission—maintaining secure links with ballistic missile submarines—and the Looking Glass airborne command role for land, air, and sea nuclear forces. Under the new transition, the US Navy’s E-130J fleet will focus strictly on TACAMO, while the US Air Force develops separate capabilities through Looking Glass-Next and the E-4C Survivable Airborne Operations Center.
Switching to a smaller turboprop platform unlocks operational advantages for the Navy. According to defense planners, the C-130J-30 can operate from semi-prepared airstrips and austere bases, which boosts dispersal options during crises. The active production line of the C-130J simplifies logistics and training compared to the retired Boeing 707 airframe. Each Phoenix II retains in-flight refueling capabilities and long endurance, anchored by a roughly five-mile-long Very Low Frequency antenna system designed to communicate with submerged submarines through electromagnetic pulse-hardened gear.
Costs, Contracts, and Program Timeline
Financial details from the Pentagon’s Selected Acquisition Report place the average procurement unit cost for production aircraft at roughly 361 milioni di dollari each, compared to about 110 milioni di un C-130J standard. When factoring in research and development, the Program Acquisition Unit Cost rises to roughly 733 milioni di dollari per aircraft. The budget projects roughly 10,6 miliardi di dollari for research, development, test, and evaluation, alongside 9 miliardi per l’acquisizione and 3 miliardi per costruzioni militari.
Northrop Grumman secured the primary Engineering and Manufacturing Development contract in December 2024, valued between 3,46-3,6 miliardi di dollari. The work centers on integrating mission systems, including the Collins Aerospace Very Low Frequency subsystem, onto government-furnished C-130J-30 airframes. The program cleared its Preliminary Design Review, with the Critical Design Review slated for September 2027, a Milestone C production decision planned for August 2029, and initial operational test and evaluation scheduled to begin in 2033.
Risks and Technical Challenges
Despite staying on track against its acquisition baseline, the program faces scrutinized hurdles. The Government Accountability Office flagged risks tied to integrating complex communications packages onto a smaller airframe, which required design tweaks to manage strict limits on weight, power, space, and cooling. The Pentagon budget report also highlights classified operational availability risks, leading to a roughly one-year delay in the low-rate initial production decision. Northrop Grumman continues supporting the legacy E-6B fleet to bridge the operational gap until the Phoenix II achieves operational status.
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