Calvary Chapel of Carson City will open its doors 6:30-8 p.m. today for a multi-church gathering to commemorate the 40th anniversary of Roe v. Wade - the historic Supreme Court decision that legalized abortion.The Christian band, I Am They, will lead a time of worship during "The Reality of Roe" prayer and worship event. Pastors from seven area churches will each introduce a topic and lead in prayer. "To me it's important that we remember what has happened," said Pat Propster, pastor of Calvary Chapel. "Those of us who believe abortion is against God's heart are standing together on behalf …