• A Delta Air Lines flight from New York to Tel Aviv was grounded due to a bomb threat.
• The threat is the second in one day, following a similar incident earlier on Tuesday.
• US and Israeli security authorities are conducting inspections before clearance is granted.
• The earlier incident ended without any unusual findings.

This incident may indicate an increased risk of hoax threats targeting commercial aviation, which could lead to significant disruptions and security concerns. The fact that two threats were made in one day suggests a potential pattern, which could impact the airline's operations and passenger confidence.