9 7 8 ) ▁is ▁a ▁Colomb ian - American ▁actor , ▁originally ▁ha iling ▁from ▁Bar ran qu illa , ▁Colombia . ▁ ▁His ▁most ▁notable ▁role ▁to ▁date ▁is ▁that ▁of ▁D anny ▁Del g ado , ▁the ▁Black ▁Wild ▁Force ▁Power ▁R anger ▁(" I ron ▁B ison ") ▁on ▁Power ▁R angers ▁Wild ▁Force . ▁ ▁Gu z man ▁has ▁also ▁appeared ▁on ▁the ▁d ating ▁reality ▁show ▁Bl ind ▁Date . ▁ ▁References ▁ ▁External ▁links ▁ ▁Category : 1 9 7 8 ▁birth s ▁Category : American ▁male ▁television ▁actors ▁Category : Col omb ian ▁em igr ants ▁to ▁the ▁United ▁States ▁Category : F lor ida ▁International ▁University ▁al umn i ▁Category : L iving ▁people ▁Category : Pe ople ▁from ▁Bar ran qu illa ▁Category : American ▁people ▁of ▁Colomb ian ▁descent <0x0A> </s> ▁Sign aling ▁and ▁operation ▁on ▁the ▁Washington ▁Metro ▁system ▁involves ▁train ▁control , ▁station ▁identification , ▁train ▁signal ing , ▁sign age , ▁and ▁train ▁length . ▁ ▁As ▁with ▁any ▁working ▁rail road , ▁communication ▁between ▁train ▁operators , ▁dispatch ers , ▁station ▁personnel ▁and ▁passengers ▁is ▁critical . ▁ ▁Fail ures ▁will ▁result ▁in ▁del ays , ▁acc idents , ▁and ▁even ▁fatal ities . ▁ ▁It ▁is ▁therefore ▁important ▁that ▁a ▁compreh ensive ▁signal ▁system ▁operated ▁by ▁a ▁central ▁authority ▁be ▁in ▁place . ▁ ▁This ▁gives ▁individual ▁train ▁and ▁station ▁operators ▁the ▁information ▁they ▁need ▁to ▁safely ▁and ▁efficiently ▁perform ▁their ▁tasks . ▁ ▁Train ▁control ▁