Season 1 PBS , 1974 Watch now Season 2 PBS , 1974 - 1975 Watch now Season 3 PBS , 1976 Watch now Season 4 PBS , 1977 - 1978 Watch now Season 5 PBS , 1978 Season 6 PBS , 1979 Watch now Season 7 PBS , 1980 Season 8 PBS , 1981 Season 9 PBS , 1982 Season 10 PBS , 1983 - 1984 Season 11 PBS , 1984 - 1985 Season 12 PBS , 1985 Season 13 PBS , 1986 - 1987 Watch now Season 14 PBS , 1987 Season 15 PBS , 1988 Season 16 PBS , 1988 - 1989 Season 17 PBS , 1989 - 1990 Watch now Season 18 PBS , 1990 - 1991 Watch now Season 19 PBS , 1991 - 1992 Season 20 PBS , 1992 - 1993 Season 21 PBS , 1993 - 1994 Season 22 PBS , 1994 - 1995 Season 23 PBS , 1995 - 1996 Watch now Season 24 PBS , 1996 - 1997 Watch now Season 25 PBS , 1997 - 1998 Season 26 PBS , 1998 - 1999 Season 27 PBS , 1999 - 2000 Watch now Season 28 PBS , 2000 - 2001 Watch now Season 29 PBS , 2001 - 2002 Season 30 Spies that Fly PBS , 2002 - 2003 Watch now Nova recounts the history of the development of military unmanned aerial vehicles along with the opportunities and challenges they present. Season 31 PBS , 2003 - 2004 Watch now Season 32 PBS , 2004 - 2005 Watch now Season 33 PBS , 2005 - 2006 Watch now Season 34 PBS , 2006 - 2007 Watch now Season 35 PBS , 2007 - 2008 Watch now Season 36 PBS , 2008 - 2009 Watch now Season 37 PBS , 2009 - 2010 Watch now Season 38 PBS , 2010 - 2011 Watch now Season 39 PBS , 2011 - 2012 Watch now Season 40 PBS , 2012 - 2013 Watch now Season 41 PBS , 2013 - 2014 Watch now Season 42 PBS , 2014 - 2015 Watch now Season 43 PBS , 2015 - 2016 Watch now Season 44 PBS , 2016 - 2017 Watch now Season 45 PBS , 2018 Watch now Season 46 PBS , 2019 Watch now Season 47 PBS , 2020 Watch now Season 48 PBS , 2021 Watch now Season 49 PBS , 2022 Watch now Season 50 PBS , 2023 Watch now Season 51 PBS , 2023 - 2024 Watch now
, 2002 - 2003
