NISKAYUNA — About 30 people, including town and school officials, attended a Niskayuna Community Action Program meeting Monday evening at Van Antwerp Middle School to discuss teenage alcohol and drug use in the town."We've been dealing with this problem for a long time," said Jeanne Sosnow, N-CAP president. "What makes this situation more pressing right now is the upward trend we're seeing in high school drinking and marijuana use."