By Paul McLeary on March 04, 2021 at 3:05 PM Navy test of a Trident Submarine-Launched Ballistic Missile (SLBM) WASHINGTON: President Biden’s nominee to run the Pentagon policy office received a rough ride from Republicans on the Senate Armed Services Committee today over old anti-Trump tweets, the Iran deal, and nuclear modernization. Several Republicans sought assurance that the Biden administration planned to fund the modernization of the nuclear triad’s air, land and sea-based nuclear missiles, particularly the aging Ground Based Strategic Deterrent (GBSD), the replacement for the decades-old Minuteman III intercontinental ballistic missile. Kahl said he supported the effort to modernize the entire triad, though he said he would have to read the classified assessments of the GBSD program should he be confirmed before he could give a complete answer.