NASA has selected three companies to provide engineering solutions and products to Marshall Space Flight Center in Huntsville, Ala. The companies are Radiance Technologies Inc. and Teledyne Brown Engineering Inc., Huntsville, Ala., and Wyle Laboratories Inc., Houston, Texas. The performance-based, cost-reimbursement fixed-fee, indefinite-delivery, indefinite-quantity contracts have a potential value of $350 million. The contracts have a five-year performance period with a minimum order quantity value of $1 million. The three companies will compete to provide engineering solutions and products for design, development, test, evaluation, operations and training in support of MSFC flight projects, human and robotic exploration, science and technology development, future programs/projects, and other MSFC organizations that have similar needs.