of the college of william and mary center for conservation biology, has monitored the health of the baltzbank stunning started in 1972 when an at the was bands. >> if we had not band ds it, passed the endanger species act, where would the bald eagle be today? >> the bald eagle would be gone today. >> in 1972, only 20 pairs left in virginia. watch how their numbers grew on the river, last year more than a thousand breeding pairs. in all, 25 to 30,000 bald eagles visit the chesapeake bay region each year. watch as their recovery is one of the greatest conservation success stories in american history. >> most gratifying part of that is the knowledge that we did that, not the small we as conservation community, but the large we of the american people. >> we the people should be proud, he says, that our national symbol to some back from the bring of extinction. cbs news, >> on this fourth every july holiday, only in america. joe holden in for jim. anyone can accomplish any dream. that's what so great about america. >> indeed it is, actually classic by brooks and dunn there, yes. >> well, some