By restricting their advance, Egyptian ground forces would remain within range of their own SAM defences, which would provide a protective "umbrella", negating the Israeli advantage in the air.
Prin limitarea avansului lor, forțele terestre egiptene ar fi rămas în raza rachetelor antiaeriene sol-aer proprii, care le-ar oferi o "umbrelă" protectoare, anulând astfel avantajul aerian israelian.