With a growing base of national accounts and clientele, Priester Aviation has announced the promotion of a sales specialist to lead its charter aircraft division. The private aircraft management, charter, and management provider is promoting Victor Schaefer to National Director of Charter Sales. Schaefer, who previously served in a similar position for Colorado-based Mayo Aviation, will now lead charter sales for all of the Priester Aviation family of companies, including Priester, Mayo, and Atlanta-based Hill Private Aviation.