GAZA CITY, Gaza Strip (AP) — Hamas rocket squads aimed at Jerusalem for the first time Friday, along with commercial hub Tel Aviv, showing off their expanded reach as Israeli airstrikes pounded the Palestinian territory for a third day. Israel called up 16,000 reservists, moving a step closer to a possible ground offensive in the Palestinian territory.Air raid sirens sounded in the two cities which — unlike population centers in Israel’s south — had not been exposed to rocket fire from Hamas-ruled Gaza before the current round of cross-border fighting. No injuries were reported, but Hamas‘ latest attempts to hit Israel’s heartland could push Israel closer to sending ground troops into Gaza.Over the past three days, Israel has relentlessly pounded suspected rocket launching sites and other Hamas targets in Gaza with scores of airstrikes, while Hamas has fired more than 450 rockets toward Israel. The overall death toll rose to 30 — 27 Palestinians and three Israelis.The Islamic militant group was badly bruised during its last full-fledged confrontation with Israel four years ago that ended with an informal truce, although rocket fire and Israeli airstrikes on militant operations continued sporadically. The Islamic militant group appeared better prepared this time with a more powerful arsenal.