Ex FBI profiler: Why was gunman at scene of Virginia on-air killings?

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NBC News analyst Clint Van Zandt, a former FBI profiler, talks to TODAY about WDBJ7 reporter Alison Parker, 24, and photographer Adam Ward,27, who were killed during a live television broadcast on Wednesday, saying that police need to find out why a gunman apparently armed with an automatic weapon would be at the scene of an interview at a shopping center at 6:45 in the morning.