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responders. >> reporter: and they could face more challenges ahead. >> this area could see tropical storm force winds. >> reporter: meanwhile the very similar high-rise on the next block is getting further inspection. >> our building initial in conjunction with our efforts are now getting ready to x-ray columns and do a deep dive, a forensic study, into the structure. >> reporter: planning now underway for demolition of the remnants of the collapsed tower, although it could take weeks. >> that building standing definitely has been a huge obstacle. and the hazards for our men and women that are out there working. >> reporter: this structural engineer says it's not clear if the standing structure of the champlain south tower is in imminent danger of collapse or if there's a risk of heavy slabs or other debris falling. still, the possibility of that and the fact that some of the rubble has shifted is worrisome. >> should it be demolished? >> the bottom line is there's the emotional issue and then there's the structural issue.