▁r ented ▁by ▁NASA ▁at ▁a ▁cost ▁of ▁$ 4 0 ▁million ▁US D ▁per ▁year , ▁and ▁used ▁as ▁an ▁emer gency ▁landing ▁site ▁for ▁the ▁Space ▁Sh utt le ▁from ▁ 1 9 8 0 ▁until ▁ 1 9 9 1 , ▁when ▁the ▁government ▁of ▁former ▁President ▁of ▁Som alia ▁Si ad ▁Bar re ▁col lapsed . ▁ ▁In ▁ 2 0 1 2 , ▁Som al il and ' s ▁ ▁Ministry ▁of ▁Civil ▁A viation ▁contract ed ▁the ▁T ek le ber han ▁Amb aye ▁Const ruction ▁Pl c ▁( TAC ON ) ▁to ▁build ▁a ▁new ▁terminal ▁and ▁per imeter ▁f ence ▁at ▁the ▁Ber ber a ▁air port . ▁The ▁Gra de ▁ 1 ▁firm ▁had ▁previously ▁constructed ▁various ▁buildings ▁in ▁Eth iop ia , ▁including ▁the ▁O rom ia ▁region ▁president ' s ▁office , ▁the ▁Y ay u ▁fert il izer ▁factory , ▁Jim ma ▁University , ▁M ek elle ▁University ▁and ▁G amb ella ▁Region ▁Techn ical ▁and ▁V oc ational ▁Training ▁College . ▁A ▁joint ▁vent ure ▁with ▁the ▁Af ro - S ino ▁Cont ract ing ▁and ▁In vest ment ▁Company , ▁the ▁project ' s ▁design ▁was ▁conce ived ▁by ▁the ▁International ▁Cons ult ants ▁Techn ocr ats ▁and ▁Marco ▁Const ruction ▁fir ms . ▁It ▁cost ▁ 8 3 ▁million ▁Eth iop ian ▁bir r ▁in ▁total , ▁ 3 ▁million ▁bir r ▁of ▁which ▁was ▁ear mark ed ▁for ▁T AC ON . ▁In ▁March ▁ 2 0