How old was Knox Manning in Beyond the Line of Duty?

Hewitt T. WhelessHewitt T. Wheless was 29 in Beyond the Line of Duty as 'Himself - Captain, U.S. Army Air Forces'.

Birthday: Fri, Oct 31 1913 –
Sun, Sep 07 1986

Ronald ReaganRonald Reagan was 31 in Beyond the Line of Duty as 'Narrator (voice)'.

Birthday: Mon, Feb 06 1911 –
Sat, Jun 05 2004

William HopperWilliam Hopper was 27 in Beyond the Line of Duty as 'University of Texas Classmate (uncredited)'.

Birthday: Tue, Jan 26 1915 –
Fri, Mar 06 1970

Bill KennedyBill Kennedy was 34 in Beyond the Line of Duty as 'Wheless' Air Force Buddy (uncredited)'.

Birthday: Sat, Jun 27 1908 –
Mon, Jan 27 1997

Harry LewisHarry Lewis was 22 in Beyond the Line of Duty as 'Wheless' Neighbor (uncredited)'.

Birthday: Thu, Apr 01 1920 –
Sun, Jun 09 2013

Knox ManningKnox Manning was 38 in Beyond the Line of Duty as 'Radio Announcer (uncredited)'.

Birthday: Sun, Jan 17 1904 –
Tue, Aug 26 1980

Glenn StrangeGlenn Strange was 43 in Beyond the Line of Duty as 'Cal (uncredited)'.

Birthday: Wed, Aug 16 1899 –
Thu, Sep 20 1973

Lewis SeilerLewis Seiler was 52 in Beyond the Line of Duty as 'Director'

Birthday: Tue, Sep 30 1890 –
Wed, Jan 08 1964

Arthur L. ToddArthur L. Todd would have been no older than 47 in Beyond the Line of Duty as 'Director of Photography'

Birthday: Tue, Feb 12 1895 –
Fri, Aug 28 1942

Edwin GilbertEdwin Gilbert was >> in Beyond the Line of Duty as 'Writer'

Birthday: Unknown Birthday

Gordon HollingsheadGordon Hollingshead was 50 in Beyond the Line of Duty as 'Producer'

Birthday: Fri, Jan 08 1892 –
Tue, Jul 08 1952

Robert B. LeeRobert B. Lee was 36 in Beyond the Line of Duty as 'Sound'

Birthday: Sat, Dec 09 1905 –
Fri, Oct 04 1968