JUNEAU, Alaska—A small plane operated by a Christian mission organization crashed on a frozen lake in southwest Alaska over the weekend, injuring all five people on board, authorities said. Area residents, some on snowmobiles, were among those who reached the crash site before other rescue teams to help care for the victims. A pilot for the group SEND North and four passengers were in stable condition at Anchorage area hospitals, according to a statement dated Sunday and provided to the Associated Press on Monday by SEND North area director Jim Stamberg. The crash happened Saturday. The organization describes itself as supporting and administering remote ministry activities in Alaska and parts of Canada. “We praise God for His protection and mercy,” the statement said. The Cessna 206 single-engine propellor plane was headed to the small community of Port Alsworth from the community of Levelock. It crashed on the frozen Lake Iliamna …