ROANOKE COUNTY, Va. – Vaping has been called the next public health crisis for teens. It’s a problem across the country, commonwealth and even in Roanoke County. Vape pens are also small, easy to hide and easy for kids to get their hands on. However, Nancy Hans who serves as the executive director of the Prevention Council of Roanoke County said that number is still too high. Hans said vape pens are usually filled with tobacco and nicotine, which is an extremely addictive substance.