public static function getEmailAddressesOfPersonsRelatedToMission(Mission $mission)
 {
     $receivers = array();
     // Get Passenger email address
     $passenger = PassengerPeer::retrieveByPK($mission->getPassengerId());
     if ($passenger) {
         $passenger = $passenger->getPerson()->getEmail();
         if (!empty($passenger)) {
             //            $receivers['passenger_'.$mission->getId()] = $passenger;
             if (preg_match('/^[_a-z0-9-]+(\\.[_a-z0-9-]+)*@[a-z0-9-]+(\\.[a-z0-9-]+)*(\\.[a-z]{2,3})$/', $passenger)) {
                 $receivers[] = $passenger;
             }
         }
     }
     unset($passenger);
     // Get Requester email address
     $requestr = RequesterPeer::retrieveByPK($mission->getRequesterId());
     if ($requestr) {
         $requestr = $requestr->getPerson()->getEmail();
         if (!empty($requestr)) {
             //            $receivers['requestr_'.$mission->getId()] = $requestr;
             if (preg_match('/^[_a-z0-9-]+(\\.[_a-z0-9-]+)*@[a-z0-9-]+(\\.[a-z0-9-]+)*(\\.[a-z]{2,3})$/', $requestr)) {
                 $receivers[] = $requestr;
             }
         }
     }
     unset($requestr);
     // Get Coordinator email address
     $coordinator = CoordinatorPeer::retrieveByPK($mission->getCoordinatorId());
     if ($coordinator && ($coordinator = $coordinator->getMember())) {
         $coordinator = $coordinator->getPerson()->getEmail();
         if (!empty($coordinator)) {
             //            $receivers['coordinator_'.$mission->getId()] = $coordinator;
             if (preg_match('/^[_a-z0-9-]+(\\.[_a-z0-9-]+)*@[a-z0-9-]+(\\.[a-z0-9-]+)*(\\.[a-z]{2,3})$/', $coordinator)) {
                 $receivers[] = $coordinator;
             }
         }
     }
     unset($coordinator);
     // Get Other Requester email address
     $other_requestr = RequesterPeer::retrieveByPK($mission->getOtherRequesterId());
     if ($other_requestr) {
         $other_requestr = $other_requestr->getPerson()->getEmail();
         if (!empty($other_requestr)) {
             //            $receivers['other_requestr_'.$mission->getId()] = $other_requestr;
             if (preg_match('/^[_a-z0-9-]+(\\.[_a-z0-9-]+)*@[a-z0-9-]+(\\.[a-z0-9-]+)*(\\.[a-z]{2,3})$/', $other_requestr)) {
                 $receivers[] = $other_requestr;
             }
         }
     }
     unset($other_requestr);
     // Get Other Agency email address
     $other_agency = AgencyPeer::retrieveByPK($mission->getOtherAgencyId());
     if ($other_agency) {
         $other_agency = $other_agency->getEmail();
         if (!empty($other_requestr)) {
             //            $receivers['other_agency_'.$mission->getId()] = $other_agency;
             if (preg_match('/^[_a-z0-9-]+(\\.[_a-z0-9-]+)*@[a-z0-9-]+(\\.[a-z0-9-]+)*(\\.[a-z]{2,3})$/', $other_agency)) {
                 $receivers[] = $other_agency;
             }
         }
     }
     unset($other_agency);
     // Get Agency email address
     $agency = AgencyPeer::retrieveByPK($mission->getAgencyId());
     if ($agency) {
         $agency = $agency->getEmail();
         if (!empty($agency)) {
             //            $receivers['agency_'.$mission->getId()] = $agency;
             if (preg_match('/^[_a-z0-9-]+(\\.[_a-z0-9-]+)*@[a-z0-9-]+(\\.[a-z0-9-]+)*(\\.[a-z]{2,3})$/', $agency)) {
                 $receivers[] = $agency;
             }
         }
     }
     unset($agency);
     return $receivers;
 }