I'm training to be an engineer how many days to use erythromycin ointment for pink eye Most of the infractions involve unauthorized surveillance of Americans or foreign intelligence targets in the United States, both of which are restricted by law and executive order. They range from significant violations of law to typographical errors that resulted in unintended interception of U.S. emails and telephone calls, the Post said, citing an internal audit and other top-secret documents provided it earlier this summer from NSA leaker Edward Snowden, a former systems analyst with the agency.