 The Delaware State Fire Marshal's office says only on July 4th and a few other days during the year is it permitted to light certain fireworks such as sparklers and what are known as spinners, fountains, jumping jacks and ground blooms. Fireworks that are launched and explode in the air are prohibited and it's illegal to buy them in another state and bring them into Delaware. While the fire marshal says the best way to stay safe is to attend a permitted display handled by licensed professionals, handheld sparklers should be kept away from children