BUBBLE WRAP. Engineers Alfred Fielding and Marc Chavannes came up the idea for bubble wrap while working on a new type of textured wallpaper in 1957. By sealing two shower curtains together, they trapped a layer of bubbles.
Immigration and Customs Enforcement. Special agents at Immigration and Customs Enforcement, the largest investigative agency in Homeland Security, are classified as criminal investigators. They start at GL-7 with an annual base salary range of $33,829 to $42,055, or GL-9 with an annual base salary of $42,948 to $55,413.
Officers in Philadelphia, after graduating from a police academy, earn $46,783 a year and can earn salary increases until they max out at $60,759 a year.Related Reading: How to Pass a Physical Exam at the Police Academy.fficers in Philadelphia, after graduating from a police academy, earn $46,783 a year and can earn salary increases until they max out at $60,759 a year.