When your working with flash outside one thing that is always hard to deal with is the sync speed of the camera. Typically it is around 1/250 of a second but with most Nikon DSLR's and the Nikon SB flashes you can get up to around 1/4000 of a second. The problem is that you have to practically be on top of your subject with the light to get it to work properly and it really sucks power from the batteries. But with the Nikon P7000 point and shoot camera you can get sync all the way up to 1/2000 of a second as easily as if you were shooting your DSLR at 1/250th and it isn't a power suck like with the DSLR.
The above image was shot at 1/2000 of a second at f2.8 and it was part of a burst of five images. I used a Nikon SB-900 camera left tethered to the camera with an SC-17 cord. Then I processed it in Adobe Lightroom.