is currently governed by an agreement that was forged during 1978–1979 negotiations, called the Mediated Role Determination (MRD). The MRD recommends the role of Paine Field to be as a general aviation and aerospace manufacturing airport, while discouraging other types of activities including supplemental/charter air passenger service. In 2005, Snohomish County commissioned a panel to review the MRD. That panel recommended that the MRD "should not be ratified or revised, but should be retired as a policy document". In June 2008, the Snohomish County Council rejected the findings of its panel, and as in 1989, 1992, and 2001, restated its opposition to commercial air passenger services operating from Paine Field with this resolution: Reaffirm our county's commitment to preserving the existing general aviation role of Paine Field, and [to] pursue any and all lawful and appropriate means to discourage any action that would facilitate, directly or indirectly, use of Paine Field for scheduled air passenger service or air cargo service, which may include an interlocal agreement. Further reflecting its opposition to commercial air service, Snohomish County has adopted a policy of not spending funds to subsidize airlines or to pay for the infrastructure needed to support commercial air service. In 2008, two airlines, Allegiant Air and Horizon Air, expressed interest in establishing passenger flights to Paine Field to the airport authority. In May 2008, in response to these requests, the Chairman of the Snohomish County Council sent Allegiant Air a letter stating their opposition to the request to start air service. The FAA wrote to the airport authority in June 2008 to reiterate that as a recipient of federal FAA grants, the County may not prohibit commercial aeronautical activities offering services to the public. If the County blocked commercial flights, it would risk an enforcement action under Federal Aviation Regulation 16. The airport completed a draft environmental assessment of the effects of commercial aviation at Paine Field in December 2009, and the public comment period ended on February 5, 2010. Opposition to Paine Field hosting commercial air service was overwhelming in meetings held for comments on the draft environmental assessment. The neighboring city of Mukilteo hired an aviation attorney to represent the interests of the city during the environmental assessment process and promised to "make it time consuming, expensive and stretch it out. We'll fight the terminal legally." On December 4, 2012, the FAA concluded that commercial airplanes could fly