Can any company submit a proposal? Do airlines have to form a company to submit a proposal?

In 2016, TSA awarded an Indefinite Delivery, Indefinite Quantity contract to multiple vendors for a period of 10 years. If an airline or any other entity with a security screening company meets the qualification criteria identified by 49 U.S.C. § 44920, and TSA determines that there is a need to add additional vendors to the current multiple award contract for the Screening Partnership Program, that company could submit a proposal in a competitive procurement process to compete for the security screening services contract.