Not really. A cleverly-edited YouTube video appears to show Prince Harry abandoning an interview to chase an ice cream truck. In reality, the interview was cut short when his squadron was called to duty.
The dramatic moment Prince Harry runs for an ice cream van during Afghanistan interview:
Source: @ProducerTom / via: youtube.com
The actual interview, wherein Prince Harry's helicopter squadron was "scrambled" or ordered to take off very quickly (about 5 seconds in):
Source: ITN News / via: youtube.com