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.
(United States). Earnings for Public Safety Officers in the United States come in at around $14.59 per hour on average. The bottom of the pay range sits near $10.18 per hour, and the top verges on $21.44. Career length is the biggest factor affecting pay for this group, followed by geography.Work is enjoyable for Public Safety Officers, who typically claim high levels of job satisfaction.arnings for Public Safety Officers in the United States come in at around $14.59 per hour on average.