NEW YORK CITY-Like other stocks, REITs reacted favorably Monday morning following the news that al-Qaeda leader Osama bin Laden had been killed in Pakistan by US Special Forces. Even as stocks rose, however, caution prevailed at New York’s buildings and transportation hubs.

A spokesperson for SL Green Realty Corp.--whose properties include office buildings in the Grand Central, Times Square and Penn Station areas--declined to give specifics about security measures, instead emailing GlobeSt.com a statement. “We work closely with both government authorities and our tenants to establish and manage appropriate levels of security at our properties,” the statement said. “It would be inappropriate to comment publicly on the specifics.”

Joe Donovan, preparedness chair at the Building Owners and Managers Assoc., tells GlobeSt.com that he has spoken to a number of building owners across the country and that vigilance is the prevailing strategy. “I would say that most owners are following the posture of increased vigilance and less so in increasing manned security,” Donovan says. “There’s not a lot that people can do because there’s no actionable intelligence" on the part of the Department of Homeland Security.