There seems to be a running gag going on with the word "Tank". James Garner played a character here called "Tank" Sullivan. Garner also played the lead role in Tank (1984). Clint Eastwood fought a character called "Tank Murdoch" in Every Which Way but Loose (1978) and Donald Sutherland played a Tank commander called "Oddball" in Kelly's Heroes (1970), a movie which also starred Clint Eastwood.