Sr. High Mission Trips: Individuals: 6 to 12 months: December: Action International Ministries: Central America: $500 to $1000 - Browse by Continent : MissionGuide.globalSr. High Mission Trips: Individuals: 6 to 12 months: December: Action International Ministries: Central America: $500 to $1000 - Browse by Continent : MissionGuide.global