The Entwistle Company

A manufacturer of engineered products and systems for the U.S. military, with over 50 years of experience. Entwistle’s capabilities include engineering design, precision machining, welding, and assembly and testing. Entwistle is headquartered in Hudson, Massachusetts.

Tenax Aerospace

A provider of aviation services primarily to U.S. government agencies, offering aircraft procurement, modification, leasing, maintenance, logistics, aircrew and technical support services for special mission aircraft. Tenax is headquartered in Madison, Mississippi.

Stevens Aerospace & Defense Systems

A provider of maintenance, refurbishment, and overhaul (MRO) services for civilian and military general aviation aircraft. Stevens performs depot maintenance for the U.S. Army’s C-12 and UC-35 fleets, as well as major avionics and other modifications for a range of U.S. Department of Defense aircraft. Stevens is headquartered in Greenville, South Carolina.

Overwatch Imaging

A developer of software-forward airborne imaging solutions that leverage cutting-edge technologies in computer vision, GPU processing, Artificial Intelligence, and sensor fusion to automate critical tasks of sensor operation and data processing, interpretation, and delivery for wide-area search, ISR, and mapping missions. Overwatch is headquartered in Hood River, Oregon.

DS Technologies

DST contracts with its customers to test and calibrate airborne sensors for intelligence gathering, provide training support for sensor and aircraft operators, modify airborne platforms to incorporate sensors and operate ISR aircraft in law enforcement roles. NTC acquired DST in January 2023. DST is headquartered in Hagerstown, Maryland.

We offer acquisition and investment management experience in the following industries:

  • Aviation Services
  • Aerospace and Defense
  • Government Contracting
  • Complex and Specialty Material Manufacturing
  • Energy and Environmental Control Products and Technologies

Previous investments


A leading manufacturer of electronic brakes based in Clinton, MI.

Berges Electronic

A developer, manufacturer, and marketer of variable frequency drives for electric motors based in Marienheide, Germany.

The Bibb Company

A manufacturer of private label sheets and apparel fabrics based in Macon, GA.

Deck Manufacturing Co.

A manufacturer of gear-type couplings for the industrial power transmission industry based in San Marcos, Texas.

Falcon Aviation

An aircraft modification and refurbishment provider at Falcon Field Peachtree City, GA.

Grupo Blahu SA

A manufacturer of belted drive system components based in San Luis Potosi, Mexico.

JP Stevens Private Label Sheets and Towels

The private label sheet and towel business of J.P. Stevens based in Greenville, SC.

Plant Engineering Consultants, Inc.

A manufacturer and marketer of integrated electronic drive systems for the fibers industry based in Chattanooga, TN.

TB Wood’s

A leading manufacturer of electronic and mechanical industrial power transmission products based in Chambersburg, PA.

Turbo West

An FBO/MRO aviation services provider at Rocky Mountain Metropolitan Airport in Bloomfield, Colorado.