Extremely important. They are the backbone of the army, and
supply the "corporate memory" of the institution
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A canon memory card for your camera can be purchase at ebay or
amazon or even at their corporate canon website. You may also try
target or walmart stores.
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corporate
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MacBook's always have the highest security. They are not nearly
as prone to virus's as PC's and they have great security and
memory. They have outstanding virus protection as well.