Quest Hashtag
Theme
War-related sites
https://en.wikipedia.org/wiki/List_of_coastal_fortifications_of_the_United_States
https://en.wikipedia.org/wiki/Seacoast_defense_in_the_United_States
https://www.nps.gov/subjects/worldwarii/coastaldefense.htm
https://en.wikipedia.org/wiki/List_of_coastal_fortifications_of_the_United_States
https://en.wikipedia.org/wiki/Seacoast_defense_in_the_United_States
https://www.nps.gov/subjects/worldwarii/coastaldefense.htm