 The army said the men were preparing to plant explosives along the border.On December 26, Israel reopened five border crossings between Israel and Gaza, after an eight-day closure, to supply fuel for Gaza's main power plant and to provide about 100 truck loads of humanitarian aid, including grain and other goods.On that day, militants fired approximately a dozen rockets and mortar shells from Gaza at Israel; one accidentally struck a northern Gaza house, killing two Palestinian sisters and wounding a third.