LANSING - If you hear a siren along the Grand River in Lansing Wednesday, don't panic. It is only a test. The Lansing Board of Water and Light will be doing its annual test of its dam break warning system. Two sirens will sound at about 10 o'clock WEDNESDAY morning, followed by a recorded message saying: Testing the dam break flood warning system." The sirens are located along the Grand River. One is near Hazel Street in Lansing and the other is near Lenawee and River streets.