Approximately thirty minutes into the flight , the hijackers forcibly breached Attack the cockpit and overpowered the pilot and first officer , allowing Preventing_or_letting lead hijacker and trained pilot Marwan al-Shehhi to take over Change_of_leadership the controls Control .

Unable to break Bodily_harm through the besieging army , Boiditzes , the commander of the breached section privately attempted to negotiate Communication with the Caliph without notifying his superiors .

As the river overflowed Motion its banks , floods breached Damaging the dikes at Piedras Negras , Coahuila , destroying Destroying large sections of the town .

However , the vault was breached Damaging by long term water intrusion , that submerged the entire vehicle , causing significant cosmetic and structural damage .

The Hitler Line was breached Damaging by the 1st Canadian Infantry Division 's 4th Princess Louise Dragoon Guards at Pontecorvo on 23 May .

Rushing Self_motion waters demolished Damaging about 150 road and rail bridges and breached Damaging or destroyed Destroying 30 dams .

The Möhne and Edersee dams were breached Damaging , causing Causation catastrophic flooding of the Ruhr valley and of villages in the Eder valley ; the Sorpe Dam sustained only minor damage .