1 to 2 weeks Mission Trips: Sr. High: $1000 to $3000: Central America: April: El Salvador: Clean Water/Sanitation - Browse by Continent : MissionGuide.global1 to 2 weeks Mission Trips: Sr. High: $1000 to $3000: Central America: April: El Salvador: Clean Water/Sanitation - Browse by Continent : MissionGuide.global