[Johnny555]

I was wondering that too, the closest I could find was this (but was not fruit flies and not in the USA):

https://entomology.umd.edu/news/hunting-the-flesh-eating-scr...

One unique difficulty arose in 2003 when the radiation apparatus that sterilized screwworm flies malfunctioned, resulting in the accidental release of fertile flies in Panama. Although this was a significant setback in the screwworm eradication program in Central America, Dr. Welch and others from the USDA worked tirelessly to correct this error