public static function getEmailAddressesOfPersonsRelatedToMissionLeg(MissionLeg $mission_leg)
 {
     $receivers = array();
     // Get Coordinator email address
     $coordinator = CoordinatorPeer::retrieveByPK($mission_leg->getCoordinatorId());
     if ($coordinator && ($coordinator = $coordinator->getMember())) {
         $coordinator = $coordinator->getPerson()->getEmail();
         if (!empty($coordinator)) {
             //            $receivers['coordinator_'.$mission_leg->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 Pilot email address
     $pilot = PilotPeer::retrieveByPK($mission_leg->getPilotId());
     if ($pilot && ($pilot = $pilot->getMember())) {
         $pilot = $pilot->getPerson()->getEmail();
         if (!empty($pilot)) {
             //        $receivers['pilot_'.$mission_leg->getId()] = $pilot;
             if (preg_match('/^[_a-z0-9-]+(\\.[_a-z0-9-]+)*@[a-z0-9-]+(\\.[a-z0-9-]+)*(\\.[a-z]{2,3})$/', $pilot)) {
                 $receivers[] = $pilot;
             }
         }
     }
     unset($pilot);
     // Get Backup Pilot email address
     $backup_pilot = PilotPeer::retrieveByPK($mission_leg->getBackupPilotId());
     if ($backup_pilot && ($backup_pilot = $backup_pilot->getMember())) {
         $backup_pilot = $backup_pilot->getPerson()->getEmail();
         if (!empty($backup_pilot)) {
             //            $receivers['backup_pilot_'.$mission_leg->getId()] = $backup_pilot;
             if (preg_match('/^[_a-z0-9-]+(\\.[_a-z0-9-]+)*@[a-z0-9-]+(\\.[a-z0-9-]+)*(\\.[a-z]{2,3})$/', $backup_pilot)) {
                 $receivers[] = $backup_pilot;
             }
         }
     }
     unset($backup_pilot);
     // Get Co-Pilot which is relate to Member
     $co_pilot = MemberPeer::retrieveByPK($mission_leg->getCopilotId());
     if ($co_pilot) {
         $co_pilot = $co_pilot->getPerson()->getEmail();
         if (!empty($co_pilot)) {
             //            $receivers['co_pilot_'.$mission_leg->getId()] = $co_pilot;
             if (preg_match('/^[_a-z0-9-]+(\\.[_a-z0-9-]+)*@[a-z0-9-]+(\\.[a-z0-9-]+)*(\\.[a-z]{2,3})$/', $co_pilot)) {
                 $receivers[] = $co_pilot;
             }
         }
     }
     unset($co_pilot);
     // Get Backup Co-pilot email address
     $backup_co_pilot = MemberPeer::retrieveByPK($mission_leg->getBackupCopilotId());
     if ($backup_co_pilot) {
         $backup_co_pilot = $backup_co_pilot->getPerson()->getEmail();
         if (!empty($backup_co_pilot)) {
             //            $receivers['backup_co_pilot_'.$mission_leg->getId()] = $backup_co_pilot;
             if (preg_match('/^[_a-z0-9-]+(\\.[_a-z0-9-]+)*@[a-z0-9-]+(\\.[a-z0-9-]+)*(\\.[a-z]{2,3})$/', $backup_co_pilot)) {
                 $receivers[] = $backup_co_pilot;
             }
         }
     }
     unset($backup_co_pilot);
     // Get mission assist email address
     $mission_assist = MemberPeer::retrieveByPK($mission_leg->getMissAssisId());
     if ($mission_assist) {
         $mission_assist = $mission_assist->getPerson()->getEmail();
         if (!empty($mission_assist)) {
             //            $receivers['mission_assist_'.$mission_leg->getId()] = $mission_assist;
             if (preg_match('/^[_a-z0-9-]+(\\.[_a-z0-9-]+)*@[a-z0-9-]+(\\.[a-z0-9-]+)*(\\.[a-z]{2,3})$/', $mission_assist)) {
                 $receivers[] = $mission_assist;
             }
         }
     }
     unset($mission_assist);
     // Get Backup mission assist email address
     $backup_mission_assist = MemberPeer::retrieveByPK($mission_leg->getBackupMissAssisId());
     if ($backup_mission_assist) {
         $backup_mission_assist = $backup_mission_assist->getPerson()->getEmail();
         if (!empty($backup_mission_assist)) {
             //            $receivers['backup_mission_assist_'.$mission_leg->getId()] = $backup_mission_assist;
             if (preg_match('/^[_a-z0-9-]+(\\.[_a-z0-9-]+)*@[a-z0-9-]+(\\.[a-z0-9-]+)*(\\.[a-z]{2,3})$/', $backup_mission_assist)) {
                 $receivers[] = $backup_mission_assist;
             }
         }
     }
     unset($backup_mission_assist);
     // Get Pilot Aircraft email address
     $pilot_aircraft = PilotAircraftPeer::retrieveByPK($mission_leg->getPilotAircraftId());
     if ($pilot_aircraft && ($pilot_aircraft = $pilot_aircraft->getMember())) {
         $pilot_aircraft = $pilot_aircraft->getPerson()->getEmail();
         if (!empty($pilot_aircraft)) {
             //            $receivers['pilot_aircraft_'.$mission_leg->getId()] = $pilot_aircraft;
             if (preg_match('/^[_a-z0-9-]+(\\.[_a-z0-9-]+)*@[a-z0-9-]+(\\.[a-z0-9-]+)*(\\.[a-z]{2,3})$/', $pilot_aircraft)) {
                 $receivers[] = $pilot_aircraft;
             }
         }
     }
     unset($pilot_aircraft);
     // Get Share AFA ORG email address
     $afa_org = AfaOrgPeer::retrieveByPK($mission_leg->getShareAfaOrgId());
     if ($afa_org) {
         $afa_org = $afa_org->getRefContactEmail();
         if (!empty($afa_org)) {
             //            $receivers['afa_org_'.$mission_leg->getId()] = $afa_org;
             if (preg_match('/^[_a-z0-9-]+(\\.[_a-z0-9-]+)*@[a-z0-9-]+(\\.[a-z0-9-]+)*(\\.[a-z]{2,3})$/', $afa_org)) {
                 $receivers[] = $afa_org;
             }
         }
     }
     unset($afa_org);
     return $receivers;
 }