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.
Transportation Security Screener Salary Statistics. According to the Bureau of Labor Statistics, transportation security screeners, as of May 2012, earned a median annual salary of $36,850, with the top 10 percent earning $44,650.he top-paying industries for transportation security screeners (and their annual mean salary) include: 1  Rail Transportation: $45,990. 2  Federal Executive Branch: $37,310. 3  Local Government: $35,860.