TITLE 18 / PART I / CHAPTER 37 / § 795: Photographing and sketching defense installations http://uscode.house.gov/view.xhtml?req=granuleid:USC-prelim-title18-section795&num=0&edition=prelim https://www.govinfo.gov/content/pkg/USCODE-2010-title18/pdf/USCODE-2010-title18-partI-chap37-sec795.pdf