P~OJECT 1C073 RECORD C-' D c ur'Ound-v, ~uol 7. LENGTH OF C3 SE?.VATION liJ. O~leF SU14MA~Y O F SIGHT ING a Grouo1d -Rodar :o.H..:LUSlONS 'H:J. B11ll oon Probablt Bollonn Po;,:;i~ly Bolloo, Wa'l -\ircroft Probably Aircraft Po!>::.l boy Ai rcrnfr \'los )Ltro,om col P r::.':lobl y Ast ronomi col Pos!>ibly Astro,omicol lnsulficHtnl Oot o for Fvoluol~ l