one city not c yetaut ghin the crossfire deis oss ia,n ukraine'f's r utsohwest on the blaca.k se that'sherni sckchifrin is tonight. nick: defending ukrai'n's thd-irlargt escityin begs ionts behes. odessa and's fill sandbags to dendfe the city frusom rsian inonvasi. they are all volunteers, and assembly line of workersor f him w isth is therlle fu-teim job. pealcefu times, thasis w a yat ubcl. 58r--yeaolald bert is the manager. do you fear thatde osscoa uld be targeted very soon? >> yeswe, are very afrdai cause we undanerstd atth the aggrr,esso t rheussian armasy, h crosseld al rliednes. when they sht ot aa clnuear wernt pla.wnhe they sht oothat humanitnaria corridors. i have no doubt thaty thewill vebeha i tnhe same way hanere d only wcastn op them. ckni: i11n days,y the have filled 300,000 bags. ei brattle cry, tathe niolna emanth. ♪ but ifhi ts chorusll sti rgsin oloudn isthch bea, in the cyit ercent ihat s fallen silt.en this is the heart of theit cy, ualla y bustngli andou ld reet. you can see everything here is completely closed. at the end of the street, odessa's w-forldams ouoper