Lieber & Weissman Sec., L.L.C. NYC office is intact and will open as soon as city officials ensure the safety of the area and power is restored. Bright Trading , ETG and many other firms have offices within 8 Blocks of the World Trade Center. Please check with each individual firm to see if the office is open. Individual firm offices may not open on Monday due to safety concerns or power requirements . Gene Weissman