August 10, 2017 7:30 pm Wood Construction Causes Concern With a 10-alarm fire in Waltham, Massachusetts, being determined to have been intentionally set, the NBC Boston Investigators are looking into construction materials that may cause flames to spread even faster. US & World Videos 0:37 Ex-Abercrombie CEO arrested on sex trafficking-related charges 9:07 Selena Gomez and Benny Blanco's sweetest moments 2:13 Real-life ‘Karate Kid' meets his inspiration 2:12 What to expect in court as Trump faces 2020 election charges in DC 0:54 Parents can start helping teenagers to build a financial foundation at home without spending
