People performing this activity title an Alexander Rose book that calls Nathaniel Sackett “the great innovator” of this activity in America. John Jay’s brother James invented a “sympathetic” material for this activity noted for its heat resistance. Abraham Woodhull was part of a group organized for this activity led by Benjamin Tallmadge. Men given the name “Samuel Culper” worked in this activity, (10[1])which also led to the death of Nathan Hale. Working in this (10[1])activity led to John (10[1])Andre’s (10[1])execution after his stockings were found to contain documents provided (10[1])to him by Benedict Arnold. For 10 points, name this activity in which ostensible civilians secretly collect (10[1])military intelligence. ■END■ (10[1])