Answer the question at the end by quoting:

Ziaur Rahman, popularly known as Zia, was the second son of Mansur Rahman and Jahanara Khatun. His father was a chemist who specialised in paper and ink chemistry and worked for a government department at Writer's Building in Kolkata. As a child Ziaur Rahman, nicknamed Komol, was reserved, shy, quietly spoken, and intense in many respects. He was raised in Bagbari village, Bogra and studied in Bogra Zilla School.
Ziaur Rahman became the 7th President of Bangladesh on 21 April 1977. Years of disorder from the previous political administration of the Awami League and BAKSAL had left most of Bangladesh's state institutions in disarray, with constant internal and external threats. Assuming full control of the state, Zia lifted martial law and introduced massive reforms for the development of the country. In late September 1977, a group of Japanese Red Army terrorists hijacked an aeroplane and forced it to land in Dhaka. On 30 September, while the attention of the government was riveted on this event, a mutiny broke out in Bogra. Although the mutiny was quickly quelled on the night of 2 October, a second mutiny started in Dhaka, led by disgruntled airmen of Bangladesh Air Force (BAF). The mutineers unsuccessfully attacked Zia's residence, captured Dhaka Radio for a short time and killed a good number of air force officers and airmen at Tejgaon International Airport, where they were gathered for negotiations with the hijackers. Wing Commander M. Hamidullah Khan BP (Sector Commander Bangladesh Defence Forces Sector 11), then BAF Ground Defence Commander, quickly put down the rebellion within the Air Force, but the government was severely shaken. Chief of Air Staff AVM AG Mahmud reappointed Wing Commander Hamidullah as Provost Marshal of BAF. Government intelligence had failed and Zia promptly dismissed the DGFI chief, AVM Aminul Islam Khan BAF, of 9th GD(P) formerly of PAF, and also the DG-NSI. In the aftermath at least 200 soldiers involved in the coup attempt were executed following a secret trial, prompting some critics to call Zia "ruthless". The size of Bangladesh police forces was doubled and the number of soldiers of the army increased from 50,000 to 90,000. In 1978 he appointed Hussain Muhammad Ershad as the new Chief of Army Staff, promoting him to the rank of Lieutenant General. He was viewed as a professional soldier with no political aspirations (because of his imprisonment in former West Pakistan during the Bangladesh War of Independence) who possessed a soft corner for India. Quietly Ershad rose to become Zia's close politico-military counsellor. In 1981 he brought back Mujib's daughter Hasina Wazed to Bangladesh.

What was one of his reforms?

The size of Bangladesh police forces was doubled and the number of soldiers of the army increased from 50,000 to 90,000.

Answer the question at the end by quoting:

Morbid Angel is an American death metal band based in Tampa, Florida formed in 1983 by guitarist and sole remaining original member Trey Azagthoth, vocalist and bassist Dallas Ward, and drummer Mike Browning. Widely considered as one of the most influential bands in the genre and important in the transition of death metal from its thrash metal roots, they were one of the first bands to incorporate guttural vocals, up-tempo blast beats, multiple tempo changes and dark atmosphere. They have been described as one of "the most influential and emulated bands in death metal", alongside Obituary and Cannibal Corpse, and have been cited as an influence by many later bands. They were also the first death metal band to experience mainstream success in connection with being signed to Giant Records in 1992, heavy rotation of their music videos on MTV, and having the music video for the song "God of Emptiness" shown on an episode of Beavis and Butt-head.
Morbid Angel was formed in 1983 in Tampa, Florida by guitarist Trey Azagthoth and drummer/vocalist Mike Browning. The band made their debut in 1987 on the New Renaissance Records record label. They recorded their debut album, Abominations of Desolation, in 1986, but the band was unsatisfied with the final product and it remained unreleased until 1991, printing 10,000 copies. In the early stages of their career the band developed a reputation for "gruesome stage antics." In 1986, David Vincent joined the band, replacing Michael Manson and Sterling von Scarborough as vocalist and bassist respectively. Fellow Terrorizer drummer Pete Sandoval soon followed. Their first studio album, Altars of Madness, was released in 1989, and is regarded by many as one of the most important death metal albums of all time. It is also considered the first true death metal album. Music journalist Jason Birchmeier writes that: Few albums struck a chord within the ears and minds of the late-'80s underground metal scene like Morbid Angel's Altars of Madness did at the end of the decade, setting a new precedent for metal bands to reach. With the arguable exception of Chuck Schuldiner's Death, never before had a heavy metal band carried their lightning-fast guitar riffs and equally spellbinding guitar solos into such horrific territory. Venom and Slayer redefined the extent to which a metal band could align itself with all things evil during the beginning of the decade, but Morbid Angel made these two groups sound like children's music compared to the Florida-based group's assaulting death metal sounds and their blasphemous lyrics.

Was he the only one to be replaced?
Fellow Terrorizer drummer Pete Sandoval soon followed.