; and (3) any other observed activities endangering persons or property in the air or on the ground. (b) Assistance in enforcement actions The Corporation shall provide necessary assistance in any enforcement action taken by the Administrator resulting from a report of the Corporation or another person or entity. (c) Statutory construction This section may not be construed to limit the authority of the Administrator to undertake enforcement actions upon the Administrator's initiative. 90506. Insurance requirements The Corporation shall maintain adequate liability insurance policies and coverages, as determined by the Secretary, including complete indemnification of employees of the Corporation for acts within the scope of employment. 907 General Rights of Access to Airspace, Airports, and Air Traffic Services Vital for Ensuring Safe Operations for All Users Sec. 90701. Access to airspace. 90702. Access to airports. 90703. Contract tower service after date of transfer. 90704. Availability of safety information to general aviation operators. 90705. Special rules and appeals process for air traffic management procedures, assignments, and classifications of airspace. 90706. Definitions. 90701. Access to airspace The Secretary shall take such actions as are necessary to ensure that an air traffic services user is not denied access to airspace or air traffic services on the basis that the user is exempt from charges and fees under section 90313. 90702. Access to airports In carrying out section 90501(c)(3), the Secretary shall determine whether a proposal would materially reduce access to a public-use airport, including a general aviation or rural airport. 90703. Contract tower service after date of transfer (a) Transfer of contract tower agreements to Corporation In carrying out section 91302(e), the Secretary shall take such actions as are necessary to ensure that the Corporation assumes the contract and other obligations associated with the operation of an air traffic control tower that, prior to the date of