Robert A. Kirkpatrick

Walden's Machine, Inc. manufactures precision-machined parts and assemblies from raw materials including aluminum, titanium, stainless steel, and inconel. It makes parts for Boeing planes, embraer airplanes and bell helicopters. It serves the aircraft, aerospace and petroleum industries throughout the world. The company was founded in 1977 and is headquartered in Tulsa, OK.

Accurus Aerospace Corp. supplies metallic parts, kits and assemblies, and processing services to the aerospace and defense industry. Its machining and processing capabilities fabricate and treat small-to-large, and simple-to-complex, detailed parts in soft, hard, and exotic metals. The company was founded in November 2013 and is headquartered in Tulsa, OK.

Precision Castparts Corp. manufactures metal components and products for the aerospace and defense industries. It offers investment castings, forgings, fasteners and fastener systems, and aero structures for aerospace and power generation applications. The company was founded by Joseph Buford Cox in April 1953 and is headquartered in Portland, OR.

Primus International, Inc. supplies structural components, kits, and assemblies to the global aerospace industry. The company was founded in 1998 and is headquartered in Bellevue, WA.