Startling Comics #30

The Fighting Yank battles enemy spies who arrive as vulture-winged visitors, engaging them in combat aboard a ship and later confronting them on land. In a separate story, the Yank investigates a window that displays mysterious red sparkles and a powerful red machine, discovering a criminal plot that he thwarts. A team in red helmets and blue uniforms recovers stolen diamonds, using a carbon detector and vehicle pursuit to locate the hidden gems hidden near Hawthorne's house, ultimately delivering them to a police station.