Our Corporate Team

Picture of Josh HerrenJosh HerrenCEO/ PresidentAfter serving in the US Air Force, Josh joined the Calista HQ team leading strategic planning, M&A activities, and corporate development. In 2011, Josh joined the Yulista team with goals to bring in a leadership team, re-structure the business, and most importantly, grow the business and cast a vision for the future.
Picture of Colonel (Retired) Brian Tachias Sr. Colonel (Retired) Brian Tachias Sr. Executive Vice President of OperationsBrian is a United States Army Veteran with over thirty years of service and aviation acquisition experience, culminating his military service as the Chief of Staff for the Program Executive Office (PEO) Aviation. Brian’s experience in industry includes having served as the Senior Vice President for MAG Aerospace, where he led an integrated team of 500 employees in support of Department of Defense.
Picture of Ian NeumannIan NeumannVP of Business DevelopmentAs VP of BD, Ian and his Team work closely with Subsidiary Leadership supporting strategic planning, new business development and proposal activities. Prior to taking on the role of VP of BD in FY21, Ian served Yulista as a Subsidiary Lead for Yulista Tactical Services, LLC and Yulista Solutions, LLC.
Picture of Richard HarvilleRichard HarvilleDirector of Business OperationsRichard works with each Yulista subsidiary to develop and execute financial and pricing strategies. Richard oversees each subsidiary with regards to financial compliance and controls ensuring that best practices are standardized throughout the organization.

Picture of Wayne BlockelWayne BlockelSenior Director of TechnologyWayne has spent 35 years in various technology leadership roles. As Yulista's Director of Technology, Wayne brings extensive experience in the fields of cyber security, IT infrastructure, Enterprise Resource Planning systems, process improvement, and data center operations.
Picture of Richard MontecalvoRichard MontecalvoDirector of Facility and Hangar OperationsAs Director of Facility and Hangar Operations, Rich oversees facility operations, implementing industry best practices into daily operations. After retiring from the US Air Force, Rich joined Yulista in 2010 with over 30 years of aviation and program management experience.
Picture of Erica SpringerErica SpringerDirector of Human Resources As Director of Human Resources, Erica is responsible for ensuring that Yulista’s HR programs and initiatives are effective, efficient and aligned with overall business objectives. Erica joined Yulista in 2014, bringing experience in strategic planning, employee relations, compliance, benefits administration, and recruiting.
Picture of Ronald HusaRonald HusaDirector of QualityRon previously served as the Quality Manager for Y-Tech Services and Yulista Support Services from 2014-2018. As the Director of Quality, Mr. Husa oversees all quality assurance and quality management functions for Yulista and its subsidiaries.
Picture of Ashley RanguelovAshley RanguelovDirector of Marketing CommunicationsAshley is responsible for fueling marketing, communications, and organizational culture strategy at Yulista. Ashley’s team provides core marketing support, including branding, corporate communications, digital marketing, events, and strategic marketing. Ashley joined Yulista in 2020 with over 15 years of marketing experience in global high-tech industries.