Spectra Aerospace & Defense is a trusted and growing platform of C5ISR companies – CALCULEX, Galleon Embedded Computing, and ArgonFDS - bringing over a half-century of rugged, mission-ready, battle-tested experience to bear in aerospace and defense applications. From high-speed data acquisition, data recording and secure, high-density storage, to computing and rugged, clear display of mission data, Spectra delivers the products and subsystems needed for the most demanding military air, land, and sea platforms. With our comprehensive portfolio of rugged products, systems, and solutions, the Spectra family of companies’ customized end-to-end solutions for the C5ISR market help military end-users achieve mission success. Simply put, Spectra's rugged solutions Capture, Process, and Display your mission-critical data in the harshest environmental conditions. In the air, at sea, on land, and in space; We simplify integration.


Data Acquisition

Sensor Recording


Mission Computing

Encrypted Storage

NAS & File Serving

Processing & Routing






Rachelle Guzman

Manager, HR & Finance

Rachelle Guzman plays a vital role as the Manager of HR and Finance at CALCULEX, where she has been an integral team member for nine years. She is responsible for effectively managing and overseeing all aspects of company finances, ranging from budgeting to financial reporting. She also serves as an essential bridge between employees and management, skillfully managing employee relations to ensure a supportive and thriving work environment. Rachelle’s leadership sets the tone for success and employee empowerment at CALCULEX.

Rachelle, a native New Mexican, has been happily married to her husband for 13 years and is the proud mother of two daughters. She has a passion for cooking and baking, spending her free time whipping up delicious meals and treats for her family and friends to enjoy. Her culinary skills and creativity are second to none, and she takes great pride in bringing people together through her love of food.

Rachelle is a valuable asset to the CALCULEX leadership team, and with her extensive experience, she continues to play a pivotal role in driving the company’s growth and success.