Tour of Fort Miles at Cape Henlopen State Park : A tour of Battery 519 showing the inside of the fort that defended the coast during World War II is set for 2 p.m. Sept. 7, for ages 7 and older with an adult. The tour is limited to 30 people and costs $5. Pre-registration is required. Registration or information: 302-645-6852. Information about membership in the Fort Miles Historical Association or volunteering: fortmilesha.org.