the moukalaba doudou national park in gabon is one of the best places to see lowland gorillas in the wild. me, my wife sue, and my daughter kathaleen began our gorilla trek from a research camp deep in the jungle. our guide, professor lee white, felt this was a good place to start. lee: we're in the middle of their range, so they could be anywhere. apparently they're not too far from the camp today, so hopefully we'll be lucky. jack: since a large group of people could be threatening to the gorillas, i went on the first expedition, while sue and kathaleen stayed at camp. see y'all later. kathaleen: bye. jack: the biggest concern was upsetting the leader of the troop, the alpha male. as a male gorilla begins to mature, around age 12, the dark hair on its back gets lighter in color, which is why they're called silverbacks. these powerful apes weigh up to 400 pounds and may charge if they sense they're being threatened. lee: men with silver hair are a threat because the silverback thing. so you've got to keep your hat on. you take your hat off, they're gonna see the silver hair and that

today's adventure takes us into the heart of gabon's rainforest and in search of massive and majesticnd gorillas. >> a silverback! >> there's a silverback right there on the road! get outta here. >> oh! >> oh, my god! he's there by the road! a silverback! we're covering some serious ground, all for the trek of a lifetime, when we go "into the wild." >> [gasps] ooh.

caesar oban mokatu, gabon. >> here. >> harrison omar, el salvador. >> julia obragia, romania.bragia, romania. michael joseph peter hennessey, ireland. colbert son, czech republic. maha abdullah, france. and charmain malcolm, jamaica. your honor, there are 31 applicants for naturalization, and each of the applicants have been examined by the united states citizenship and immigration service. and the government has completed its investigation in each case. it has been determined that each applicant is eligible for naturalization at this time. and i move that upon taking the oath of allegiance to the united states of america each applicant present having answered to his or her name, be granted citizens as the united states of america. >> ms. horn, it would be my pleasure and delight to grant your motion. your motion is granted. new members of the united states citizenry, please raise your right hand and repeat after me. i hereby declare on oath that i absolutely and entirely renounce and adjure all allegiance and fidelity to any foreign prince, state or sovereignty of whom or whi

caesar oban mokatu, gabon. >> harrison omar, el salvador. >> julia obragia, romanian. >> my cada obregahael joseph peter hennessey, ireland. there are 31 applicants for naturalization. and each has been examined by the united states citizenship and immigration service. and the government has completed its investigation in each case. it has been determined that each applicant is eligible for naturalization at this time. -- be granted citizenship as citizens of the united states of america. >> it would be my pleasure and delight to grant your motion. your motion is granted. new member of the united states citizenry, please raise your right hand and repeat after me. i hereby declare on oath that i absolutely and entirely renounce and add you're all allegiance and fidelity to any foreign prince, state or sovereignty of whom or which i have here to for been a subject or citizen. that i will support and defend constitution and the laws of the united states of america. against all enemies foreign and domestic. that i will bear true faith and allegiance to the same. that i will bear arms on beh