I use many pictures in presentations, briefings, and here on my blog. Sometimes, I am able to take the picture myself. But, most of the time I rely on stock photo sites to supply the right picture to make my points.
The main sites I will use are:
Stock.XCHNG is a free site that provides many wonderful pictures to use. I usually make this my first stop in finding the right picture.
iStockphoto.com is a pay site that I use when I need the best possible photo available. The quality of these photos are incredible and they ad a special touch to my presentations or blog posts.
Defense Video and Imagery Distribution System (dvids) is my first choice when I use any photos showing Soldiers in action. The photos available are top notch show cases of the best of our Military Personnel around the world.
Army.mil Images is another place that I look to find pictures to enhance my products. Typically, I will use these to show case garrison and training exercises.