Prudent or maybe just crappy missiles. Several of them failed. I doubt it was intentional and bet they would have preferred to kill as many as they could. Remember that errant Scud that wiped out a barracks in Saudi Arabia and killed a couple of hundred service men and women? Those things are unguided about on par with a V2. Also, remember all the oil well fires? I can't find a link to what I'm talking about but there was part of a refinery leaking into the Persian Gulf. There were pictures from orbit showing the blight. F-111 precision strike took out some valve that stopped it. Wow. That was almost 20 years ago and those planes far older. Defense contractors haven't been idle and ours hit what they're pointed at. Today's announcement will probably include some sort of reminder.