(o) Keep all property useful and necessary in its business in good working order and condition, ordinary wear and tear and casualty and condemnation excepted and (b) maintain with financially sound and reputable insurance companies or insurance associations insurance on all its material property in at least such amounts and against at least such risks (but including in any event public liability, product liability and business interruption) as are customarily carried in the same general area by businesses of the size and character of the business of the Group Members as reasonably determined by the Borrowers.