LAMITAN CITY — The 1101st Infantry "Gagandilan" Brigade has placed Basilan province under total lockdown, unleashing a massive joint military-police manhunt following back-to-back roadside ambushes that killed one soldier and injured more than a dozen others.Brig. Gen. Frederick Sales, Brigade commander, reported on Monday that the brigade has elevated its operational alert posture across Basilan province following consecutive hostile attacks on…